Uni-ball ZENTO Signature 3-Color Metal Gel Pen | Black, Red & Blue Ink | 0.38 / 0.5mm

Uni-ball ZENTO Signature 3-Color Metal Gel Pen

Meet the pen that does it all. The uni-ball ZENTO Signature 3-Color by Mitsubishi Pencil (uni) combines a full metal barrel, a satisfying magnetic snap cap, and three ink colors in one refined instrument. Switch between black, red, and blue gel ink at a click — perfect for annotating, color-coding, and signing with authority.

Key Features

• 3-Color Gel Ink System — Black, red, and blue ink in a single pen; switch colors instantly
• Magnetic Snap Cap — Secure one-handed capping with a premium magnetic closure; posts to the barrel for balanced writing
• Full Metal Barrel — Solid, weighted construction with a refined finish for a confident grip
• Ultra-Smooth Gel Ink — Water-resistant, fade-resistant, and quick-drying across all three colors
• Two Nib Options — 0.38mm (extra fine) for precision / 0.5mm (fine) for everyday versatility
• Refillable Design — Compatible with uni-ball ZENTO multi-color refill cartridges

Specifications

• Brand: Mitsubishi Pencil / uni
• Model: ZENTO Signature 3-Color
• Ink Colors: Black, Red, Blue
• Tip Size: 0.38mm / 0.5mm (select variant)
• Ink Type: Water-based gel
• Cap Mechanism: Magnetic snap
• Barrel Material: Metal
• Origin: Japan

Who Is This For?

Professionals who annotate, teachers who mark, planners who color-code, and stationery lovers who refuse to compromise on feel. The ZENTO 3-Color is the one pen you reach for when precision and versatility both matter.

Frequently Asked Questions

Q: How do I switch between ink colors?

A: The ZENTO 3-Color uses a multi-color mechanism — simply click or slide the selector to choose between black, red, and blue ink. Only one color tip extends at a time, keeping the nib protected and preventing accidental marks.

Q: What is the difference between the 0.38mm and 0.5mm variants?

A: The 0.38mm delivers an extra-fine line ideal for dense handwriting, detailed annotations, and small text. The 0.5mm offers a slightly broader, smoother stroke — the most popular all-purpose size for everyday writing and note-taking.

Q: Is the ink waterproof or fade-resistant?

A: Yes. All three ink colors (black, red, and blue) use water-based gel ink that is highly water-resistant and formulated to resist fading, making this pen suitable for important documents and long-term records.

Q: How does the magnetic cap work?

A: The cap snaps onto the barrel tip magnetically with a satisfying click — no twisting or pressing required. It can also be posted (attached to the back of the pen) magnetically for a balanced, comfortable writing position.

Q: Is the pen refillable?

A: Yes. The ZENTO 3-Color is compatible with uni-ball ZENTO multi-color refill cartridges, so you can replace individual ink colors as needed rather than replacing the entire pen.

Q: Is this pen suitable for left-handed writers?

A: Yes. The quick-drying gel ink across all three colors minimizes smearing, making the ZENTO 3-Color a reliable choice for left-handed writers.

Q: What paper types work best with this pen?

A: The ZENTO performs best on smooth or coated papers (e.g., Rhodia, Clairefontaine, standard office paper). For textured or absorbent papers, the 0.5mm tip is recommended for optimal ink flow and line consistency.