Three colors. One pen. Zero compromise. The Uni Uniball One 3 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.
Why the Uniball One 3 Stands Apart
The Uniball One series is celebrated for its high-concentration pigment ink that delivers exceptionally dark, vivid lines — even on glossy or coated paper. The „One 3“ takes that ink and packages it into a 3-color modular system, so you can color-code notes, annotate documents, and sign with style — all without switching pens.
Key Features
- 3-in-1 multi-color system — Black, Red, and Blue gel ink in a single pen body
- 0.38mm ultra-fine tip — crisp, precise lines ideal for dense note-taking, kanji, and detailed writing
- Retractable twist mechanism — rotate the barrel to select your color; no caps to lose
- Uniball One high-density ink — rich, saturated pigment that resists feathering and bleed-through
- Modular refill design — individual color modules are replaceable, reducing waste
- Compact, pocket-friendly body — slim profile fits comfortably in any pen case, pocket, or planner loop
- Made in Japan — Mitsubishi Pencil Co. quality, trusted by students and professionals worldwide
Perfect For
- Students who color-code lecture notes and study guides
- Professionals annotating reports, contracts, and planners
- Bullet journalers and planner enthusiasts who need multiple colors on hand
- Anyone who appreciates the precision of Japanese stationery engineering
Ink Colors Included
Each pen comes loaded with three Uniball One gel ink modules:
- ⚫ Black — deep, authoritative, perfect for primary writing
- 🔴 Red — vivid and bold, ideal for corrections and emphasis
- 🔵 Blue — classic and professional, great for signatures and annotations
Specifications
- Brand: Uni (Mitsubishi Pencil Co., Japan)
- Model: Uniball One 3
- Tip Size: 0.38mm/0.5mm
- Ink Type: Gel (high-concentration pigment)
- Colors: Black / Red / Blue
- Mechanism: Retractable twist-select
- Refillable: Yes (modular ink cartridges)
- Origin: Japan
Upgrade your everyday carry. One pen, three colors, infinite possibilities — the Uni Uniball One 3 is the last multi-pen you’ll ever need.
