🖋️ Write sharp, write smart—because details matter.
The uni-ball Signo 307 is a premium retractable gel pen featuring an ultra-fine 0.38mm tip for precise, clean writing. Its quick-drying, smear-resistant blue gel ink ensures your notes stay crisp even when writing fast. Designed with a textured rubber grip for comfort and sold in a convenient value pack of five, it’s the perfect tool for professionals who demand accuracy and reliability in every stroke.
| Manufacturer | Uni-ball |
| Brand | uni-ball |
| Item Weight | 0.634 ounces |
| Product Dimensions | 5.43 x 2.36 x 0.63 inches |
| Item model number | SG_B06Y3WFXGD_US |
| Is Discontinued By Manufacturer | No |
| Color | Blue |
| Closure | Retractable |
| Grip Type | Textured rubber |
| Material Type | Gel |
| Number of Items | 5 |
| Size | 1 Count (Pack of 5) |
| Point Type | Ultra Micro |
| Line Size | 0.38 Millimeters |
| Ink Color | Blue |
| Manufacturer Part Number | UMN30738.33*5 |
F**T
Nice Pens
Nice pens. A shame that I ended up losing most of them by now though.
H**R
Favorite pen?
Absolutely love this pen size! Good quality, no smudge, will be ordering again.
T**2
Great
Love them. They write very well.
G**D
NOTICE: THIS IS NOT Uni's 307 Dark Blue Ink, It's 207 Light Blue
I was expecting the cobalt blue ink used in the 307 Skip Free and UM151 stick Pens, and this is not it. Its the standard 207 light blue. Uni has the best writing retractable 0.38 point but every other brand offers that cobalt blue ink in 0.38. Uni You FAILED us. I'll have to settle for the navy blue in 0.38 for now, and I am disappointed but at least I can get the navy refills on Amazon.
D**H
Great pen for Bible
I love how thin this pen is and it works great in my Bible.
L**R
Fine point to the max
Super Fine point pen. I love them and use them daily as work. The pen writes very easy and smoothly.
L**L
Great pen for precise writing.
I am delightfully happy with the look and feel of this pen and thoroughly enjoy the fine tip for writing, as I tend to drag the pen from time to time. The color of the ink is the perfect shade of blue and allows me to write for long periods of time without drying out.
B**S
First time switching out of 0.7 G2s
I write pretty hard which is why I've opted for 0.7 mm most of my life. The G2 refills are easily accessible with many colors to choose from.The reviews on the ultra micro 307s were stellar, so I said why not. I just finished my first pen and I think I am sold. I am back looking for more of these. They're not scratchy. Write smoothly every time. The finer tips help me fit more writing onto a page than 0.7 mms would allow. I never thought it would work out for me. I'm a happy journaler!
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