The limited-edition barrel colors inspired by the understated beauty of everyday surroundings, evoking a sense of calm and connection. Each shade showcases a soft, natural tone, such as the airy elegance of Cobalt Blue. The sleek barrel features a smooth, streamlined form, accented by a polished metal tip that adds refined elegance. Its minimalist design blends sophistication with modernity for a timeless aesthetic. The stabilizer mechanism at the tip ensures smooth, stable writing, while the oval-shaped open wire clip, harmoniously coordinated to match the barrel, enhances the design and easily attaches to notebooks and planners. Features advanced Uni-ball One ink technology with a new pigment for darker blacks and reduced paper penetration, delivering clear, fast-drying writing that resists smudging and enhances note clarity and retention. The precision-crafted metal tip provides a low center of gravity, enabling the extra fine tip pens to glide effortlessly with minimal pressure—ideal for studying, note-taking, journaling, and more.

The Uni-Ball One F is the latest addition to the vibrant Uni-Ball One gel ink pens series, crafted for those who value refined quality and an exceptional writing experience. Combining aesthetics with functionality, the Uni-Ball One F delivers uniquely stable and smooth writing performance, thanks to its precision-crafted metal tip and innovative stabilizer mechanism. This design ensures a low center of gravity, allowing the fine point pen to glide effortlessly with minimal pressure—perfect for studying, note-taking, journaling, and more.

The barrel colors are inspired by the understated beauty of everyday surroundings, evoking a sense of calm and connection. Each shade is thoughtfully curated to reflect soft, natural tones, like the airy elegance of Cobalt Blue, offering a subtle yet expressive palette.

Featuring a sleek barrel with a smooth, streamlined form, the UniBall pen is stylishly accented by a polished metal tip that enhances its minimalist design. This sophisticated aesthetic blends modernity with timeless elegance. The oval-shaped open wire clip, harmoniously coordinated to match the barrel, adds both style and practicality, allowing easy attachment to notebooks and planners while maintaining its elegant profile.

Using advanced UniBall One ink technology, the pen incorporates a new pigment that delivers deeper, richer blacks with minimal paper penetration. The fast-drying ink resists smudging, ensuring every word is crisp, bold, and memorable.

More than just colorful pens, the Uni-Ball One F is a seamless blend of quality, style, and functionality, offering a premium writing experience that inspires creativity and expression with every stroke.

5 Count
Color: Cobalt Blue
Ink: Gel Ink (Black)
Tip: 0.5mm Fine Point Pens
Diameter: 11.1 mm (0.4") Max Width: 15.5 mm (0.6") x Length: 139.2 mm (5.5")
Weight: 14.2 g (0.5 oz)

Ink Refill: UMR-05S

Quality Made in Japan