--- product_id: 56958648 title: "Signo 307 Retractable Gel Ink Pen, Ultra Micro Point 0.38mm, Blue Ink, UMN-307-38, Value Set of 5" brand: "uni-ball" price: "521641₫" currency: VND in_stock: true reviews_count: 13 category: "Uni Ball" url: https://www.desertcart.vn/products/56958648-signo-307-retractable-gel-ink-pen-ultra-micro-point-0 store_origin: VN region: Vietnam --- # smooth, smear-resistant gel ink retractable design for on-the-go use 0.38mm ultra micro point for precision Signo 307 Retractable Gel Ink Pen, Ultra Micro Point 0.38mm, Blue Ink, UMN-307-38, Value Set of 5 **Brand:** uni-ball **Price:** 521641₫ **Availability:** ✅ In Stock ## Summary > 🖋️ Write sharp, write smart — the pen that means business. ## Quick Answers - **What is this?** Signo 307 Retractable Gel Ink Pen, Ultra Micro Point 0.38mm, Blue Ink, UMN-307-38, Value Set of 5 by uni-ball - **How much does it cost?** 521641₫ with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/56958648-signo-307-retractable-gel-ink-pen-ultra-micro-point-0) ## Best For - uni-ball enthusiasts ## Why This Product - Trusted uni-ball brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Effortless Grip:** Textured rubber grip ensures comfortable, fatigue-free writing during long meetings or creative sessions. - • **Pinpoint Precision:** Ultra micro 0.38mm tip delivers the finest, cleanest lines for flawless note-taking and detailed work. - • **Ready When You Are:** Convenient retractable mechanism means no caps to lose—perfect for busy professionals on the move. - • **Value Pack Advantage:** Set of 5 pens keeps you stocked and ready, so you never run out during critical moments. - • **Smudge-Free Confidence:** Advanced gel ink formula dries quickly to prevent smearing—even when writing fast or on important documents. ## Overview The Uni-Ball Signo 307 is a premium retractable gel ink pen featuring an ultra-fine 0.38mm tip for precise writing. Its quick-drying, smear-resistant blue gel ink ensures clean, professional results every time. Designed with a textured rubber grip and a convenient retractable mechanism, this value set of 5 pens is ideal for professionals who demand reliability and style in their everyday writing tools. ## Description Uni-ball Signo 307 Retractable Gel Ink Pen, Micro Point 0.38mm, Blue Ink, UMN-307-38, Value Set of 5 Review: Best Pens - I love these pens. There is nothing better than a pen that writes in a fine line and these are the finest. They have a good grip, too. Will definitely buy them again. Review: Awesome pen - These are by far my favorite pens. I like the super fine tip. Doesn’t smear. Very smooth writing. Perfect for writing checks, even though I don’t write too many of them anymore. ## Features - Uni-ball Signo 307 Retractable Gel Ink Pen, UMN-307-38 - The diameter of a lead : Micro Point 0.38mm, Color : Blue Ink - Even if write in a hurry, there is no rubbing of characters, Ink is difficult to accumulate - Value Set of 5 ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B06Y3WFXGD | | Additional Features | Retractable | | Age Range (Description) | Adult | | Age Range Description | Adult | | Best Sellers Rank | #44,416 in Office Products ( See Top 100 in Office Products ) #1,019 in Gel Ink Pens | | Body Shape | Round | | Brand | Uni-Ball | | Brand Name | Uni-Ball | | Closure Type | Retractable | | Color | Blue | | Customer Reviews | 4.6 out of 5 stars 384 Reviews | | Drill Point | Ultra Micro | | Grip Type | Textured rubber | | Hand Orientation | Ambidextrous | | Ink Base | Water | | Ink Color | Blue | | Item Dimensions | 5.43 x 2.36 x 0.63 inches | | Item Weight | 0.02 Kilograms | | Line Size | 0.38 Millimeters | | Manufacturer | Uni-ball | | Material | Gel | | Material Type | Gel | | Model Number | SG_B06Y3WFXGD_US | | Style | Refillable | | UPC | 191308002824 | | Unit Count | 5 Count | | Writing Instrument Form | Ballpoint Pen | ## Product Details - **Age Range (Description):** Adult - **Brand:** Uni-Ball - **Color:** Blue - **Ink Color:** Blue - **Writing Instrument Form:** Ballpoint Pen ## Images ![Signo 307 Retractable Gel Ink Pen, Ultra Micro Point 0.38mm, Blue Ink, UMN-307-38, Value Set of 5 - Image 1](https://m.media-amazon.com/images/I/41s2wVFZTOL.jpg) ![Signo 307 Retractable Gel Ink Pen, Ultra Micro Point 0.38mm, Blue Ink, UMN-307-38, Value Set of 5 - Image 2](https://m.media-amazon.com/images/I/21jf8eXiS-L.jpg) ![Signo 307 Retractable Gel Ink Pen, Ultra Micro Point 0.38mm, Blue Ink, UMN-307-38, Value Set of 5 - Image 3](https://m.media-amazon.com/images/I/31yuziYOvSL.jpg) ## Questions & Answers **Q: Are these refillable?** A: Yes. They are refillable. For blue ink look for UMR83E.33. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Best Pens *by P***S on December 23, 2025* I love these pens. There is nothing better than a pen that writes in a fine line and these are the finest. They have a good grip, too. Will definitely buy them again. ### ⭐⭐⭐⭐⭐ Awesome pen *by J***C on September 3, 2023* These are by far my favorite pens. I like the super fine tip. Doesn’t smear. Very smooth writing. Perfect for writing checks, even though I don’t write too many of them anymore. ### ⭐⭐⭐⭐⭐ My favorite pens, and I have tried lots and lots! *by L***S on November 12, 2017* The finest pen-point I've found that still writes well! These write so smoothly with the finest of lines. I think I've ordered at least 4 sets - not that any pen has ever failed or made blobs of ink - I just lose them. Also, I want to have one in every purse, at every desk, in every checkbook.... I LOVE these pens! Oh, and they come all the way from Japan, so it takes longer than most orders from Amazon, but so worth the extra wait. ## Frequently Bought Together - Uni-Ball Signo 307 Retractable Gel Ink Pen, Ultra Micro Point 0.38mm, Blue Ink, UMN-307-38, Value Set of 5 - Uni-ball Signo 307 Retractable Gel Ink Pen, Ultra Micro Point 0.38mm, Black Ink, UMN-307-38, Value Set - Uniball Gel Pen 12 Pack, 0.38mm Ultra Micro Black Ink, Smooth Writing Office Supplies --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.vn/products/56958648-signo-307-retractable-gel-ink-pen-ultra-micro-point-0](https://www.desertcart.vn/products/56958648-signo-307-retractable-gel-ink-pen-ultra-micro-point-0) --- *Product available on Desertcart Vietnam* *Store origin: VN* *Last updated: 2026-05-20*