{"title":"Uni Multi Pens","description":"","products":[{"product_id":"mitsubishi-4in1-multifunction-pen-jetstream-karimoku-0-5mm","title":"Mitsubishi 4in1 Multifunction Pen Jetstream Karimoku 0.5MM","description":"\u003cp\u003eMitsubishi Pencil MSXE5KF05.4 Multifunction Pen Jetstream Karimoku 4\u0026amp;1 0.5mm Sunset Orange Blue\u003c\/p\u003e\n\u003cp\u003eJet Stream: Smooth writing that becomes addictive \/ Ultra-low friction jet stream ink\u003cbr\u003eFeatures: Model uses unused Kalimoku furniture material for the Jetstream 4 \u0026amp; 1 grip\u003cbr\u003eMechanism: Knock-type, Ball Diameter: 0.02 inches (0.5 mm); Ink Color: Black, Red, Blue, Green; Sharp Lead Diameter: 0.02 inches (0.5 mm); Sharp Eraser: S\u003cbr\u003eSize: Shaft diameter 0.5 inches (13.7 mm) x thickness 0.7 inches (18.5 mm) x total length 5.8 inches (148.8 mm); Weight: 0.9 oz (24.6 g)\u003cbr\u003eRefills: SXR-80 each color\u003c\/p\u003e","brand":"Uni","offers":[{"title":"Orange","offer_id":51197913694513,"sku":"MSXE5KF05.4C-1","price":40.0,"currency_code":"USD","in_stock":true},{"title":"Blue","offer_id":51197913727281,"sku":"MSXE5KF05.4C-2","price":40.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0804\/2630\/3793\/files\/O1CN01bHETGG20UjCwIweIf__980466853-0-cib.jpg_0bde9a21-a646-4ee3-91de-752749b3cd69.webp?v=1743259718"},{"product_id":"uni-jetstream-4-1-lite-touch-ink-multi-pen","title":"Uni Jetstream 4\u00261 Lite Touch Ink Multi Pen","description":"\u003cp\u003eJetstream 4\u0026amp;1 Lite Touch Ink Multi Pen \/ uni Mitsubishi Pencil\u003c\/p\u003e\n\u003cp\u003eThe Jetstream 4\u0026amp;1 Lite Touch Ink Multipen is a versatile and high-performance multi-function pen that combines 4 ballpoint pen colors and a mechanical pencil into one sleek tool. Featuring Jetstream’s advanced Lite Touch Ink technology, this pen delivers ultra-smooth, low-pressure writing for exceptional comfort and precision. Ideal for professionals, students, and creatives, it’s designed for efficiency and style.\u003c\/p\u003e\n\u003cp\u003eKey Features:\u003cbr\u003eLite Touch Ink Technology: uni’s Lite Touch Ink reduces the pressure needed for smooth writing, making it easier on your hand during extended use. Enjoy vibrant, quick-drying ink that ensures clean, smudge-free results, perfect for left-handed users and fast writers.\u003cbr\u003e 5-in-1 Functionality: Includes four ballpoint pen colors (black, red, blue, and green or blue-black for Soft Terracotta and Misty Purple only) and a 0.5mm mechanical pencil, offering a comprehensive writing solution in one compact device.\u003cbr\u003e Jetstream Ink Advantages: Combines the best of oil-based and gel inks, providing vibrant colors, smooth writing, and water- and fade-resistant durability.\u003cbr\u003e Sleek and Durable Design: A stylish yet robust build with an ergonomic grip, ensuring comfort and durability during extended writing sessions.\u003cbr\u003e Mechanical Pencil with Eraser: The integrated 0.5mm pencil includes a replaceable eraser under the cap for convenience.\u003cbr\u003eCompatible Refill: Jetstream Lite Touch Ink Refill SXR-L8005 \/ uni Mitsubishi Pencil\u003c\/p\u003e\n\u003cp\u003eSpecifications:\u003cbr\u003eInk Colors：Black, Red, Blue, Green\u003cbr\u003ePencil and Pen Lead Diameter：0.5mm\u003cbr\u003eInk Type：Lite Touch Jetstream Ink\u003cbr\u003eGrip Material：Soft rubber\u003cbr\u003eModel: MSXE5-1000\u003c\/p\u003e","brand":"Uni","offers":[{"title":"Mellow White","offer_id":51345736597809,"sku":"MSXE5-1000C-1","price":18.0,"currency_code":"USD","in_stock":true},{"title":"Coral Pink","offer_id":51345736630577,"sku":"MSXE5-1000C-2","price":18.0,"currency_code":"USD","in_stock":true},{"title":"Steel Blue","offer_id":51345736663345,"sku":"MSXE5-1000C-3","price":18.0,"currency_code":"USD","in_stock":true},{"title":"Mist Blue","offer_id":51345736696113,"sku":"MSXE5-1000C-4","price":18.0,"currency_code":"USD","in_stock":true},{"title":"Grass Green","offer_id":51345736728881,"sku":"MSXE5-1000C-5","price":18.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0804\/2630\/3793\/files\/O1CN01QaGB1s1NT6r6Ijb8b__3354831570.webp?v=1747141141"},{"product_id":"uni-jetstream-prime-3-color-ballpoint-pen","title":"Uni Jetstream Prime 3 Color Ballpoint Pen","description":"\u003cp\u003eJetstream Prime 3 Color Ballpoint Pen \/ uni Mitsubishi Pencil 0.5MM\/0.7MM\u003c\/p\u003e\n\u003cp\u003eThe Mitsubishi Pencil Jetstream Prime 3 Color Ballpoint Pen is a premium multi-pen designed for smooth writing and versatility. Featuring three Jetstream inks (black, blue, and red), this pen is known for its low-viscosity oil-based ink that dries quickly, resists smearing, and provides a comfortable, fluid writing experience. The pen has a sleek metal body with a twist mechanism for easy color selection, making it a stylish addition to any workspace.\u003c\/p\u003e\n\u003cp\u003eKey Features:\u003cbr\u003eInk Type: Low-viscosity oil-based ink for smooth and quick-drying writing.\u003cbr\u003eBody Material: Metal body with a twist mechanism.\u003cbr\u003eColors: Black, blue, and red inks in one pen.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003eSpecifications    Details\u003cbr\u003eMeasurements      L14 cm (5.5 in)\u003cbr\u003eWeight     27g \u003cbr\u003e\u003c\/p\u003e","brand":"Uni","offers":[{"title":"Pink 0.5mm","offer_id":51455525978417,"sku":"SXE3-3500C-1","price":55.0,"currency_code":"USD","in_stock":true},{"title":"Navy 0.5mm","offer_id":51455526011185,"sku":"SXE3-3500C-2","price":55.0,"currency_code":"USD","in_stock":true},{"title":"Black 0.7mm","offer_id":51455526043953,"sku":"SXE3-3500C-3","price":55.0,"currency_code":"USD","in_stock":true},{"title":"Green 0.7mm","offer_id":51455526076721,"sku":"SXE3-3500C-4","price":55.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0804\/2630\/3793\/files\/jetstream-prime-3-color-ballpoint-pen-uni.webp?v=1749391895"},{"product_id":"uni-pure-malt-0-7mm-4-1-multi-function-pen","title":"UNI Pure Malt 0.7mm 4+1 Multi Function Pen","description":"\u003cp\u003eUNI PURE MALT 0.7mm 4+1 Multi Function Pen, MSXE5-2005-07\u003c\/p\u003e\n\u003cp\u003eThe oak material that has been used as a whiskey barrel \u003cbr\u003efor decades has been changed to a ballpoint pen material. \u003cbr\u003eThe gentle texture of wood and the warmth \u003cbr\u003eof the wood make it a perfect fit for your life.\u003c\/p\u003e\n\u003cp\u003eSize:diameter 13.7mm *18.5mm*148.7mm in total length\u003c\/p\u003e\n\u003cp\u003e5 functions: 4 color 0.7mm ballpoint pen+ 0.5mm mechanical pencil\u003c\/p\u003e\n\u003cp\u003eNib: 0.7mm\u003c\/p\u003e\n\u003cp\u003e4colors: Black\/Blue\/Red\/Green\u003c\/p\u003e\n\u003cp\u003eRefill: SXR-80-07\u003c\/p\u003e","brand":"Uni","offers":[{"title":"Default Title","offer_id":51694840774961,"sku":"MSXE5-2005-07","price":23.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0804\/2630\/3793\/files\/UNI-Pure-Malt-0.7mm-multi-pen4.png?v=1754053770"},{"product_id":"uni-jetstream-4-1-metal-0-5-mm-ballpoint-multifunctional-pen","title":"Uni Jetstream 4\u00261 Metal 0.5 mm Ballpoint Multifunctional Pen","description":"\u003cp\u003eUni Jetstream 4\u0026amp;1 Metal 4 Color 0.5 mm Ballpoint Multi Pen + 0.5 mm Pencil\u003c\/p\u003e\n\u003cp\u003eThe Uni Jetstream Multifunctional Pen combines four ballpoints (black, red, blue, and green) and a 0.5mm mechanical pencil, ideal for extensive writing, note-taking, and journaling. \u003c\/p\u003e\n\u003cp\u003eThe Metal version features an aluminum-crafted pen tip, grip, and eraser cap for enhanced durability. The grip's unique knurling texture improves stability and comfort while writing. The upper barrel is made of ABS with a refined matte metallic finish, elevating the quality feel while effectively managing the pen's weight and balance.\u003c\/p\u003e\n\u003cp\u003eLow-viscosity Oil-based Ink: Uni's Jetstream is the world's first revolutionary low-viscosity oil-based ink, which ensures silky writing at any speed with less resistance than traditional oil-based pens.\u003cbr\u003eRich Ink Saturation and Quick-Dry: With unique colorants and pigments, Jetstream delivers colors that are twice as rich as regular oil-based inks; the ink soaks into paper fast and dries quickly to reduce smudging.\u003cbr\u003eInk Backflow Prevention: The double balls and spring mechanism inside the refill prevent ink backflow, even when the pen is subjected to shaking and impact.\u003cbr\u003eStable Writing Experience: Despite containing five refills, its compact shape and exquisite craftsmanship ensure a comfortable grip and a stable, non-vibrating tip during writing.\u003cbr\u003eThoughtful Detail Design: A metal clip adds durability, and a small eraser in the end cap provides convenience for quick corrections.\u003c\/p\u003e\n\u003cp\u003eSpecifications:\u003cbr\u003e- Pen Refill: SXR-80-38; SXR-80-05; SXR-80-07; SXR-ML; SXR-203-28; SXR-203-38\u003cbr\u003e- Tips Size: Ballpoint Pen: 0.5mm; Mechanical Pencil: 0.5mm\u003cbr\u003e- Ink Colors: Black; Red; Blue; Green\u003cbr\u003e- Body Dimensions: Φ13.7mm × 148.8mm\u003cbr\u003e- Tip\/Grip\/Cap Material: Aluminum\u003cbr\u003e- Barrel Material: ABS Resin\u003cbr\u003e- Clip Material: Steel\u003c\/p\u003e","brand":"Uni","offers":[{"title":"Dark Green","offer_id":51694917746993,"sku":"MSXE5-2000A-1","price":24.0,"currency_code":"USD","in_stock":true},{"title":"Gunmetel","offer_id":51694917779761,"sku":"MSXE5-2000A-2","price":24.0,"currency_code":"USD","in_stock":true},{"title":"Rose Gold","offer_id":51694917812529,"sku":"MSXE5-2000A-3","price":24.0,"currency_code":"USD","in_stock":true},{"title":"Ice Silver","offer_id":51694917845297,"sku":"MSXE5-2000A-4","price":24.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0804\/2630\/3793\/files\/uni-mitsubishi-jetstream-multi-functional-41-metal-ballpoint-pen-dark-green-multi-functional-pens-304593.jpg?v=1754057277"},{"product_id":"uni-jetstream-4-1-multi-pen-0-38mm-ballpoint-0-5mm-pencil","title":"Uni Jetstream 4\u00261 Multi Pen 0.38mm Ballpoint + 0.5mm Pencil","description":"\u003cp\u003eUni Jetstream 4\u0026amp;1 4 Color 0.38 mm Ballpoint Multi Pen + 0.5 mm Pencil\u003c\/p\u003e\n\u003cp\u003eSmooth writing and sharp design come together in this impressively crafted multi pen. Featuring four colors of super-smooth Jetstream ballpoint inks and a 0.5 mm mechanical pencil, this pen combines all the basic writing instruments a hardworking student or professional needs into one convenient pen body.\u003c\/p\u003e\n\u003cp\u003eFeatures:\u003cbr\u003eFour ballpoint ink components (black, blue, green, and red), plus a 0.5 mm mechanical pencil component. The ballpoint components feature Uni's revolutionary low-viscosity Jetstream ink—famous for its smooth ink flow, quick drying times, and water- and light-resistance. 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Featuring four colors of super-smooth Jetstream ballpoint inks and a 0.5 mm mechanical pencil, this pen combines all the basic writing instruments a hardworking student or professional needs into one convenient pen body.\u003c\/p\u003e\n\u003cp\u003eFeatures:\u003cbr\u003eFour ballpoint ink components (black, blue, green, and red), plus a 0.5 mm mechanical pencil component. The ballpoint components feature Uni's revolutionary low-viscosity Jetstream ink—famous for its smooth ink flow, quick drying times, and water- and light-resistance. 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One rotary click. The \u003cstrong\u003eUni Jetstream Prime 3\u0026amp;1\u003c\/strong\u003e puts three colours of Jetstream — the ink that defined what fast, smooth, clean oil-based ballpoint writing feels like — and a 0.5mm mechanical pencil inside a single \u003cstrong\u003efull-metal barrel\u003c\/strong\u003e with a \u003cstrong\u003etwist-selector mechanism\u003c\/strong\u003e that extends each function in turn. The metal body is finished in \u003cstrong\u003ematte black throughout\u003c\/strong\u003e: barrel, clip, grip, tip — a blacked-out silhouette that reads as a serious tool rather than a novelty multi-pen. The \u003cstrong\u003eSXR-200-07 Jetstream metal refills\u003c\/strong\u003e deliver the ultra-low-friction, quick-drying ink performance that Jetstream is known for in black, red, and blue. The 0.5mm pencil adds the eraser-compatible function that completes the writing toolkit. At 0.7mm, the ballpoint line weight is the optimal balance between speed and legibility for note-taking at pace. Model \u003cstrong\u003eMSXE455007.24\u003c\/strong\u003e. Made in Japan.\u003c\/p\u003e\n\n\u003cp\u003eJetstream ink. Three colours. Pencil. Metal body. One pen.\u003c\/p\u003e\n\n\u003ch3\u003e✏️ Product Highlights\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Uni (Mitsubishi Pencil Co., Japan)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e Jetstream Prime 3\u0026amp;1 — MSXE455007.24\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFunctions:\u003c\/strong\u003e 4 — black 0.7mm Jetstream \/ red 0.7mm Jetstream \/ blue 0.7mm Jetstream \/ 0.5mm mechanical pencil\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInk type:\u003c\/strong\u003e Jetstream ultra-low-friction oil-based ink — quick-drying, smooth, crisp dark lines\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatible refill:\u003c\/strong\u003e Uni SXR-200-07 Jetstream Metal Refill (black, red, blue)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSelector mechanism:\u003c\/strong\u003e Twist rotary — rotate the barrel to select each function in sequence\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBarrel material:\u003c\/strong\u003e Full metal body\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Matte black throughout — barrel, grip, clip, and tip all in the same blacked-out finish\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClip style:\u003c\/strong\u003e Flat slit-style metal clip — flush, low-profile, modern\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Japan\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSuitable for:\u003c\/strong\u003e Office use, meetings, lecture note-taking, student annotation, travel carry, desk use, gifting\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e💧 Jetstream Ink – Why It Matters\u003c\/h3\u003e\n\u003cp\u003eJetstream is not a marketing name for ordinary ballpoint ink. It is a \u003cstrong\u003especific Uni ink formulation\u003c\/strong\u003e that occupies the space between oil-based ballpoint and gel ink: the durability and weather resistance of oil-based ink combined with a friction coefficient closer to that of gel. The practical writing differences compared to standard oil ballpoint:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUltra-low friction:\u003c\/strong\u003e The ink is formulated to require significantly less writing pressure than standard oil ballpoint to produce a full, dark line. The result is a writing experience that is closer to gel in smoothness while retaining the oil-based ink’s quick-dry and water-resistance properties.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuick-drying:\u003c\/strong\u003e Jetstream ink dries on contact with standard paper fast enough that left-handed writers — who drag their hand across freshly written text — experience less smearing than with gel or rollerball inks. For right-handed writers, the ink is effectively dry before the next line is reached.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDark, crisp lines:\u003c\/strong\u003e The black Jetstream ink is one of the darkest, most saturated ballpoint inks available at 0.7mm — the line reads as clearly as gel on white paper under all lighting conditions.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e0.7mm at speed:\u003c\/strong\u003e At 0.7mm, the Jetstream refill is calibrated for the combination of line width and writing speed that produces legible, clean handwriting without the line thickening or ink pooling that can occur with wider tips at fast writing pace.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e🔄 Twist Rotary Selector – Function Switching Without a Button Panel\u003c\/h3\u003e\n\u003cp\u003eStandard multi-function pens use a panel of colour-coded push buttons on the barrel top or side. The Jetstream Prime 3\u0026amp;1 uses a \u003cstrong\u003etwist rotary mechanism\u003c\/strong\u003e instead:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eRotate the barrel in one direction to cycle through the four functions in sequence. Each click of the rotation extends the selected function’s tip from the pen nib.\u003c\/li\u003e\n  \u003cli\u003eThe rotary mechanism eliminates the button panel entirely — the barrel is a smooth, uninterrupted cylinder with no protruding buttons, no colour-coded plastic tabs, and no asymmetric profile from side-mounted controls.\u003c\/li\u003e\n  \u003cli\u003eThe visual result is a pen that looks like a single-function premium instrument rather than a multi-function tool. The function labels or markers are present but integrated into the design without disrupting the clean silhouette.\u003c\/li\u003e\n  \u003cli\u003eThe rotary action is precise and firm — each function engages with a clear detent, and the extended tip does not retract under normal writing pressure.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e🔫 Full Metal Body – Matte Black Blacked-Out Finish\u003c\/h3\u003e\n\u003cp\u003eThe Jetstream Prime 3\u0026amp;1’s metal construction is not decorative — it is structural. The full metal body provides:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight and balance:\u003c\/strong\u003e The metal barrel gives the pen a settled, controlled feel in the hand. The weight distribution across the full barrel length produces a writing balance that is natural for most grip styles without being tip-heavy.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDurability:\u003c\/strong\u003e A metal body does not crack, warp, or surface-degrade under the daily carry conditions that would show wear on a plastic multi-pen after months of use. The pen is built to remain in rotation for years.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMatte black finish:\u003c\/strong\u003e The matte finish is applied consistently across the entire exterior — barrel, grip section, clip, and tip housing — creating a uniform blacked-out appearance. The matte surface does not show fingerprints or reflections, maintaining a clean appearance under desk lighting and in hand.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlat slit clip:\u003c\/strong\u003e The clip is a thin, flat metal strip with a slit cut — a low-profile, flush design that does not protrude significantly from the barrel profile. The clip holds securely on shirt pockets and notebook covers without the lever-arm bulk of a conventional spring clip.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e📦 What’s in the Box\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × Uni Jetstream Prime 3\u0026amp;1 Multifunction Pen — MSXE455007.24, Matte Black\u003c\/li\u003e\n  \u003cli\u003ePre-loaded: SXR-200-07 Jetstream refills in black, red, and blue (0.7mm); 0.5mm mechanical pencil lead\u003c\/li\u003e\n  \u003cli\u003e\u003cem\u003eCompatible replacement refill: Uni SXR-200-07 Jetstream Metal Refill (black, red, blue — available separately)\u003c\/em\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003e❓ Frequently Asked Questions\u003c\/h2\u003e\n\n\u003ch3\u003eQ: How does the twist rotary selector work — how do I switch between ink colours and pencil?\u003c\/h3\u003e\n\u003cp\u003eA: The Jetstream Prime 3\u0026amp;1 uses a \u003cstrong\u003etwist rotary mechanism\u003c\/strong\u003e to select each function. Grip the lower barrel and rotate the upper barrel section in the designated direction — each rotation step advances to the next function (black → red → blue → pencil → retracted, or a similar sequence). The selected function’s tip extends from the pen nib as each detent is reached. To retract all tips, continue rotating past the last function to the retracted position. The mechanism requires no buttons and no visual reference to the top of the pen to operate — the function is identified by the rotational position of the barrel.\u003c\/p\u003e\n\n\u003ch3\u003eQ: Is the Jetstream Prime 3\u0026amp;1 the same as the standard Jetstream 3\u0026amp;1?\u003c\/h3\u003e\n\u003cp\u003eA: No. The \u003cstrong\u003eJetstream Prime\u003c\/strong\u003e series is Uni’s premium Jetstream multi-pen range, distinguished from the standard Jetstream 3\u0026amp;1 by its \u003cstrong\u003efull metal body, twist rotary selector, and premium finish\u003c\/strong\u003e. The standard Jetstream 3\u0026amp;1 (MSXE3-500) uses a plastic or metal-accented body with a conventional push-button selector. Both use Jetstream ink refills, but the Prime is the higher-specification instrument in terms of build, mechanism, and design. The SXR-200-07 refill used in the Prime is a metal-cased refill designed for the Prime series; standard Jetstream refills from the plastic multi-pen series (SXR-80) are not compatible.\u003c\/p\u003e\n\n\u003ch3\u003eQ: What replacement refills are compatible, and where can I buy them?\u003c\/h3\u003e\n\u003cp\u003eA: The Jetstream Prime 3\u0026amp;1 is compatible with the \u003cstrong\u003eUni SXR-200-07 Jetstream Metal Refill\u003c\/strong\u003e in 0.7mm, available in black, red, and blue. This refill is specific to the Jetstream Prime series — it has a metal casing and different dimensions from the standard Jetstream D1-format or push-button refills. SXR-200-07 refills are available from Uni-brand stationery retailers and online. For the mechanical pencil function, standard \u003cstrong\u003e0.5mm mechanical pencil lead\u003c\/strong\u003e from any brand is compatible.\u003c\/p\u003e\n\n\u003ch3\u003eQ: Does Jetstream ink smear — is it suitable for left-handed writers?\u003c\/h3\u003e\n\u003cp\u003eA: Jetstream is \u003cstrong\u003eone of the best ballpoint ink options for left-handed writers\u003c\/strong\u003e. Its oil-based formulation dries significantly faster than gel or rollerball ink — fast enough that the typical left-handed smear (caused by the writing hand dragging across freshly written text in left-to-right writing systems) is substantially reduced. Jetstream is not instantaneously dry in the way that some pigment inks are, but its dry time is short enough that most left-handed writers at normal writing speed will not experience smearing on standard paper. On coated or very smooth paper, dry time increases slightly — allow a second before overwriting.\u003c\/p\u003e\n\n\u003ch3\u003eQ: Is the matte black finish durable — will it scratch or chip with daily carry?\u003c\/h3\u003e\n\u003cp\u003eA: The matte black finish on a metal body is \u003cstrong\u003emore durable than paint on plastic\u003c\/strong\u003e, but like all surface finishes, it can show wear marks from sustained contact with hard or abrasive materials (keys, metal objects in a bag or pocket). For daily carry alongside other metal objects, a pen sleeve or case prevents surface contact and keeps the finish clean. The matte surface is less likely to show fingerprint marks or light scratches than a gloss finish — minor handling marks are less visible on matte than on polished black surfaces.\u003c\/p\u003e\n\n\u003ch3\u003eQ: Is this pen suitable for signing documents or official use?\u003c\/h3\u003e\n\u003cp\u003eA: Yes. The \u003cstrong\u003eblack and blue Jetstream 0.7mm tips\u003c\/strong\u003e produce a line that is dark, clean, and permanent — suitable for signing documents, completing official forms, and any writing context where a clear, legible, permanent record is required. Jetstream oil-based ink does not fade significantly with normal light exposure and is water-resistant once dry. For archival or legally significant documents where ink permanence and provenance matter, confirm with the relevant authority whether oil-based ballpoint ink meets their specific requirements.\u003c\/p\u003e\n\n\u003ch3\u003eQ: How does this compare to the Jetstream Prime Single (single-function version)?\u003c\/h3\u003e\n\u003cp\u003eA: The \u003cstrong\u003eJetstream Prime Single\u003c\/strong\u003e is a single-function pen in the same metal body aesthetic — one ink colour, no multi-function mechanism. It is lighter and slimmer than the 3\u0026amp;1 due to the absence of the multi-function mechanism. The \u003cstrong\u003e3\u0026amp;1 adds black, red, and blue Jetstream plus a mechanical pencil\u003c\/strong\u003e in exchange for slightly more barrel diameter and weight from the rotary mechanism. Writers who use only one ink colour and want the most minimal single pen should consider the Prime Single. Writers who regularly use multiple colours and pencil — and want to carry one pen rather than three or four — the Prime 3\u0026amp;1 is the correct choice.\u003c\/p\u003e\n\n\u003ch3\u003eQ: Is this a good premium gift for a professional or pen collector?\u003c\/h3\u003e\n\u003cp\u003eA: Yes. The Jetstream Prime 3\u0026amp;1 occupies the space between a \u003cstrong\u003epractical daily-use tool and a considered premium gift\u003c\/strong\u003e. The full metal body, blacked-out matte finish, and twist rotary mechanism give the pen a premium presentation that recipients recognise as more than an ordinary office pen. The Jetstream ink specification means it is genuinely useful as a writing tool, not just a desk object. For professionals who write by hand in meetings and want three colours available without carrying multiple pens, this is the correct instrument. It presents well in a pen box and requires no explanation of its function to be immediately useful.\u003c\/p\u003e","brand":"Uni","offers":[{"title":"Default Title","offer_id":51786198319409,"sku":"MSXE455007","price":69.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0804\/2630\/3793\/files\/Japan-Uni-Jetstream-Prime-Twist-31-Multi-Ballpoint-Pen2.jpg?v=1756648235"},{"product_id":"uni-jetstream-prime-multi-function-pen-3-1-0-5mm","title":"Uni Jetstream Prime Multi-Function Pen 3\u00261 - 0.5mm Dark Navy","description":"\u003ch2\u003eUni Jetstream Prime Multi-Function Pen 3\u0026amp;1 - 0.5mm\u003c\/h2\u003e\n\u003cp\u003eThis sleek and stylish pen combines three smooth Jetstream ballpoint inks—black, red, and blue—with a mechanical pencil, all in one slim, twist-action body. Rather than clicking to extend and retract, simply twist to the desired function. It writes smoothly and switches functions easily, making it perfect for both everyday use and professional settings.\u003c\/p\u003e\n\u003cp\u003eDesigned with a modern, streamlined look and a flat clip, it feels as good as it looks. It also comes in soft, high-quality paper packaging, making it a great gift for anyone who values both function and design.\u003c\/p\u003e\n\u003cp\u003eMSXE4-5500\u003cbr\u003e0.5mm\u003cbr\u003eBody Color: Glossy Dark Navy\u003cbr\u003eInk: Oil-based Black, red, and blue\u003cbr\u003eTo refill lead, unscrew top and remove eraser.\u003c\/p\u003e","brand":"Uni","offers":[{"title":"Default Title","offer_id":51786200318257,"sku":"MSXE4-5500","price":59.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0804\/2630\/3793\/files\/Japan-Uni-Jetstream-Prime-Twist-31-Multi-Ballpoint-Pen2_89dc3979-2fe9-413e-a80a-562d66273bb6.jpg?v=1756648927"},{"product_id":"uni-mse-3005-pure-malt-premium-2-1-multi-functional-pen-0-7mm","title":"Uni MSE-3005 Pure Malt Premium 2\u00261 Multi-Functional Pen,0.7mm","description":"\u003cp\u003eUni Mitsubishi Pencil MSE-3005 Pure Malt Premium 2\u0026amp;1 Multi-Functional Pen, 0.7mm\u003c\/p\u003e\n\u003cp\u003eModel Number: MSE-3005\u003cbr\u003ePendulum knock type \/ with a sharp eraser\u003cbr\u003eLead diameter: 0.02 inches (0.5 mm) Mechanical pencil\u003cbr\u003eBall Diameter: 0.03 inch (0.7 mm); Ink Color: Black, Red\u003cbr\u003eSize: Shaft Diameter 0.5 x Thickness 0.6 x Total Length 5.5 inches (12.9 x 16.0 x 140.6 mm)\u003c\/p\u003e","brand":"Mitsubishi","offers":[{"title":"Default Title","offer_id":51880116912433,"sku":"MSE-3005","price":42.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0804\/2630\/3793\/files\/51C63ulfbcL._AC_SL1000.jpg?v=1758966858"},{"product_id":"uni-mse4-5025-pure-malt-premium-3-1-multi-functional-pen-0-7mm","title":"Uni MSE4-5025 Pure Malt Premium 3\u00261 Multi-Functional Pen,0.7mm","description":"\u003cp\u003e\u003cstrong\u003eUni Mitsubishi Pencil MSE4-5025 Pure Malt Premium 3\u0026amp;1 Multi-Functional Pen, 0.7mm\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eModel Number: MSE4-5025\u003cbr\u003ePendulum knock type \/ with a sharp eraser\u003cbr\u003eLead diameter: 0.02 inches (0.5 mm) Mechanical pencil\u003cbr\u003eBall Diameter: 0.7mm Ink Color: Black, Red, Blue\u003cbr\u003eSize: Shaft Diameter 0.6 x Thickness 0.6 x Total Length 5.5 inches (14.1 x 16.0 x 140.6 mm)\u003c\/p\u003e","brand":"Mitsubishi","offers":[{"title":"Default Title","offer_id":51880118518065,"sku":"MSE4-5025","price":60.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0804\/2630\/3793\/files\/61bDrH8Vk4L._AC_SL1500.jpg?v=1758967121"},{"product_id":"uni-uniball-one-3-multi-function-3-color-gel-ink-pen-0-38mm-0-5mm","title":"Uni Uniball One 3 Multi-Function 3-Color Gel Ink Pen 0.38mm\/0.5mm","description":"\u003cp\u003e\u003cstrong\u003eThree colors. One pen. Zero compromise.\u003c\/strong\u003e The \u003cstrong\u003eUni Uniball One 3\u003c\/strong\u003e is a premium Japanese multi-function gel ink pen that puts black, red, and blue ink at your fingertips — switchable with a single click. Engineered by Mitsubishi Pencil Co., it combines the legendary Uniball One ink formula with a sleek, compact rotating body built for everyday precision.\u003c\/p\u003e\n\u003ch2\u003eWhy the Uniball One 3 Stands Apart\u003c\/h2\u003e\n\u003cp\u003eThe Uniball One series is celebrated for its \u003cstrong\u003ehigh-concentration pigment ink\u003c\/strong\u003e that delivers exceptionally dark, vivid lines — even on glossy or coated paper. The \"One 3\" takes that ink and packages it into a \u003cstrong\u003e3-color modular system\u003c\/strong\u003e, so you can color-code notes, annotate documents, and sign with style — all without switching pens.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e3-in-1 multi-color system\u003c\/strong\u003e — Black, Red, and Blue gel ink in a single pen body\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e0.38mm ultra-fine tip\u003c\/strong\u003e — crisp, precise lines ideal for dense note-taking, kanji, and detailed writing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRetractable twist mechanism\u003c\/strong\u003e — rotate the barrel to select your color; no caps to lose\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUniball One high-density ink\u003c\/strong\u003e — rich, saturated pigment that resists feathering and bleed-through\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModular refill design\u003c\/strong\u003e — individual color modules are replaceable, reducing waste\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact, pocket-friendly body\u003c\/strong\u003e — slim profile fits comfortably in any pen case, pocket, or planner loop\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMade in Japan\u003c\/strong\u003e — Mitsubishi Pencil Co. quality, trusted by students and professionals worldwide\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePerfect For\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eStudents who color-code lecture notes and study guides\u003c\/li\u003e\n\u003cli\u003eProfessionals annotating reports, contracts, and planners\u003c\/li\u003e\n\u003cli\u003eBullet journalers and planner enthusiasts who need multiple colors on hand\u003c\/li\u003e\n\u003cli\u003eAnyone who appreciates the precision of Japanese stationery engineering\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eInk Colors Included\u003c\/h2\u003e\n\u003cp\u003eEach pen comes loaded with three Uniball One gel ink modules:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e⚫ \u003cstrong\u003eBlack\u003c\/strong\u003e — deep, authoritative, perfect for primary writing\u003c\/li\u003e\n\u003cli\u003e🔴 \u003cstrong\u003eRed\u003c\/strong\u003e — vivid and bold, ideal for corrections and emphasis\u003c\/li\u003e\n\u003cli\u003e🔵 \u003cstrong\u003eBlue\u003c\/strong\u003e — classic and professional, great for signatures and annotations\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Uni (Mitsubishi Pencil Co., Japan)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e Uniball One 3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTip Size:\u003c\/strong\u003e 0.38mm\/0.5mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInk Type:\u003c\/strong\u003e Gel (high-concentration pigment)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColors:\u003c\/strong\u003e Black \/ Red \/ Blue\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMechanism:\u003c\/strong\u003e Retractable twist-select\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRefillable:\u003c\/strong\u003e Yes (modular ink cartridges)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Japan\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eUpgrade your everyday carry. 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