

🖋️ Write sharp, write smart — precision meets style in every stroke.
The Uni One gel pen by uni-ball combines a 0.38mm ultra micro tip with revolutionary ultra-vivid, fade-resistant gel ink that dries quickly to prevent smudging and bleeding. Its minimalist white barrel with an anti-slip grip and color-coded clips offers both style and functionality, making it ideal for professionals and creatives who demand precision and lasting quality in their writing instruments.



























| ASIN | B09ZK13551 |
| Additional Features | Fade Resistant |
| Age Range Description | Adult |
| Best Sellers Rank | #6,611 in Office Products ( See Top 100 in Office Products ) #259 in Gel Ink Pens |
| Body Shape | Round |
| Brand Name | Uni-Ball |
| Closure Type | Retractable |
| Color | White |
| Customer Reviews | 4.5 4.5 out of 5 stars (1,251) |
| Drill Point | Ultra Micro |
| Grip Type | Ribbed |
| Hand Orientation | Ambidextrous |
| Hardness | HB |
| Included Components | 12 Gel Pens |
| Ink Base | Water |
| Ink Color | Black |
| Item Diameter | 0.41 Millimeters |
| Item Dimensions | 5.5 x 0.41 x 0.61 inches |
| Item Weight | 0.02 Pounds |
| Line Size | 0.38mm |
| Manufacturer | uni-ball |
| Material Type | Plastic |
| Model Name | uniball™ one |
| Model Number | 70392 |
| Pattern | Solid |
| Recommended Uses For Product | Writing |
| Style | 0.38 mm Ultra Micro |
| Theme | Cartoon |
| UPC | 030246703922 |
| Unit Count | 12.0 Count |
| Water Resistance Level | Water Resistant |
| Writing Instrument Form | Multifunction Writing Instruments |
K**Y
Good pen
Incredible value high precision pen. Would 100% buy again. The .3mm is very good for very small text such as kanji.
J**N
Best Gel Pens for Writing and Note Taking!!
They don't bleed and feel great to write with. If you have the habit of writing small these are fantastic but I am not sure if that is the case for people who like to write large. However, personally I find these pens fun to write with.
C**Y
Perfect Daily Work Pen
I love these pens and use them daily at work. I love how ultra fine the point is and how smooth they write. I love that the clip is metal because I’m usually always breaking those off of other pens. Definitely worth a purchase!
M**J
Great Product
This product is a fantastic find! It's reasonably priced, making it accessible for most budgets without compromising on quality. The product is exactly as described, and its usefulness cannot be overstated. I've found it to be incredibly practical and efficient in meeting my needs. The attention to detail is impressive, and the performance is on par with more expensive alternatives. If you're looking for something reliable, well-made, and at a fair price point, this is the perfect choice. Highly recommended!
M**P
Great pens, but the WHITE
My favorites are the Uniball Signo RT, but it seems they are getting tougher to find. I bought these to test. They seem to write pretty similar, so that's wonderful. But the white is looking messy pretty quickly. I had some brand new ones in a pen/pencil case. Pulled one out to use, and it looks dirty just from being in there. Not sure why white was the choice, but I hope they figure out some other colors.
T**D
Uni-ball ONE 0.38mm – Key Features
》Fast ink response with smooth, consistent writing 》Stable tip with slight resistance, offering excellent control and precision 》Clean, crisp ink lines with no skipping or blotting 》Comfortable writing feel on paper, even during long sessions 》More refined and controlled than a typical fountain pen, without ink bleed or maintenance Ideal for small handwriting, note-taking, journaling, and detailed annotations
M**Y
FIREEE
they stopped selling muji pens, so i decided to try another alternative. honestly, for the price and the quality, this is BETTER than muji. highly recommend. great if you like taking notes and want a precise pen (0.38)
A**A
Highly recommend! If you love pens then you would love these.
I’m in love. They leave a nice gel ink look. They do not smear at all. They are smooth, no lumpy feeling. Great quality pens. I’m just in love with these pens, new favorite!
N**D
Good quality
L**A
Best pen I’ve ever used ! So I do recommend this !
A**A
Una buena opción para plumas tipo bic. El punto de la. Punta muy fino. Excelente para caligrafía y letras más legible.
C**O
Really enjoyable to write with. They put a precise and controllable deposit of ink onto the paper, suitable for fine work e.g. filling in the boxes on forms. Handwriting flows nicely. I prefer this 0.35 mm tip to the 0.5 ml tip version I've bought previously.
H**N
It was recommended by a friend, bought a pack for a great price, writes incredibly well, doesn't dry up, definitely recommended
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