| Description | Specifications | Questions & Answers |
Uni-ball One ink doesn't just look good—it may even help you be a better student. A study at Ritsumeikan University in Japan found that students who studied notes written with a black Uni-ball One pen were better able to recall the information than students reading notes written in ordinary black ink.
Compared to the original Uni-ball One, the Uni-ball One F features a wider barrel and a lower center of gravity, making it more comfortable to use for long writing sessions.
Features:
| Model Number UNI 0423-01 |
UNI 0423-01 |
| Manufacturer Uni |
Uni |
| Body Color Black |
Black |
| Body Material Plastic |
Plastic |
| Capped or Retractable Retractable - Top Button |
Retractable - Top Button |
| Clip Material Metal |
Metal |
| Clippable Yes |
Yes |
| Diameter - Grip 10.8 cm |
10.8 cm |
| Diameter - Max 11.1 mm |
11.1 mm |
| Features Spring-Loaded Clip |
Spring-Loaded Clip |
| Grip Color Black |
Black |
| Grip Material Plastic |
Plastic |
| Ink Characteristics Fade-Resistant, Fraud Prevention, Quick-Drying |
Fade-Resistant, Fraud Prevention, Quick-Drying |
| Ink Composition Pigment-Based, Water-Based |
Pigment-Based, Water-Based |
| Ink Refillable Yes |
Yes |
| Length - Retracted 13.9 cm / 5.5 inches |
13.9 cm / 5.5 inches |
| Pre-Installed Ink Color Black |
Black |
| Tip Material Metal |
Metal |
| Tip Size 0.38 mm |
0.38 mm |
| Tip Type Conical |
Conical |
| Water-Resistant Water-Resistant |
Water-Resistant |
| Weight - Whole Pen (with Ink) 0.51 oz / 14 grams |
0.51 oz / 14 grams |