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

Uni-ball ZENTO 3-Color Gel Pen

Three colors. One pen. Zero compromise. The uni-ball ZENTO 3-Color by Mitsubishi Pencil (uni) is the everyday essential for students, professionals, and planners who need black, red, and blue ink always within reach. A lightweight plastic barrel keeps it comfortable for all-day use, while uni’s trusted gel ink technology ensures a smooth, consistent line every time you write.

Key Features

• 3-Color Gel Ink System — Black, red, and blue ink in a single pen; switch colors instantly with the multi-color selector
• Lightweight Plastic Barrel — Durable, comfortable resin body designed for extended writing sessions and everyday carry
• 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
• Compact & Pocket-Ready — Slim profile fits easily in a pencil case, shirt pocket, or planner loop
• Refillable Design — Compatible with uni-ball ZENTO multi-color gel ink refill cartridges

Specifications

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

Who Is This For?

The ZENTO 3-Color is the go-to pen for anyone who color-codes notes, marks up documents, or simply wants three reliable ink colors without the bulk of carrying multiple pens. From classrooms to offices, it’s the practical choice that never lets you down.

Frequently Asked Questions

Q: How do I switch between the three ink colors?

A: The ZENTO 3-Color uses a multi-color click mechanism — press the corresponding color selector at the top of the pen to extend that ink tip. Only one color is active at a time, keeping the other tips safely retracted and preventing accidental marks.

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

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

Q: Is the plastic barrel durable enough for daily use?

A: Yes. The ZENTO 3-Color uses a high-quality resin (plastic) barrel that is lightweight yet robust, designed to withstand the rigors of daily carry in bags, pencil cases, and pockets without cracking or warping.

Q: Is the ink waterproof or fade-resistant?

A: Yes. All three ink colors use water-based gel ink that is highly water-resistant and formulated to resist fading over time, making this pen suitable for important notes, planners, and documents.

Q: Is the pen refillable?

A: Yes. The ZENTO 3-Color is compatible with uni-ball ZENTO multi-color refill cartridges. You can replace individual ink colors as they run out, extending the life of the pen and reducing waste.

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

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

Q: How does this compare to the ZENTO Flow Model or ZENTO Signature?

A: The ZENTO 3-Color is the everyday value option — a full plastic barrel keeps it lightweight and affordable. The ZENTO Flow Model adds a metal grip zone for enhanced control, while the ZENTO Signature features a full metal barrel and magnetic snap cap for a premium writing experience. All three share the same trusted ZENTO gel ink system.