uni-ball ONE UME3 Bút đa năng mini Bút gel cấu hình thấp dành cho giám đốc điều hành doanh nghiệp Công thái học Trọng lực thấp Viết chính xác dễ dàng2026

Uni-ball One UME3-SR Low Center of Gravity Ballpoint Pen, Upgraded Uni Mitsubishi Gel Pen, 0.5mm Bullet Tip, Quick-Dry Ink, Smooth Writing Office Supplies (3 Colors Pack) Rotary Color Selector (One-Handed Operation) — Twist the barrel to choose Black / Red / Blue, then press the rear knock to deploy. No side levers, no fumbling. 3 Colors in 1 Slim Shaft — Black for main notes, Red for corrections & highlights, Blue for sub-info — all in a single pen lighter than your smartphone. Mini / Slim Profile (~12.9mm barrel diameter) — Pocket-sized, planner-friendly, clip it to a notebook, shirt pocket, or field journal without the bulk.️ uni-ball ONE Rich Pigment Ink — Deep, high-contrast lines that sit on the paper surface for minimal bleed-through; water-resistant & fade-resistant.️ Refillable Refill System — When the ink runs out, replace the refill — not the pen. Eco-conscious and cost-efficient. Made in Japan — Premium Build — Brass inner components + stainless steel clip; engineered for daily carry and long-term durability.