Mitsubishi Uni Jetstream 4&1 Multi-Function Pen 0.5mm + 0.5mm Mechanical Pencil

£12.00
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11 Feb. Estimated arrival
08 Feb. Order placed
09-10 Feb. Order dispatches
11 Feb. Delivered!
🚚 Order within the next 2 hours, 15 minutes for delivery by 11 Feb, 2026.
Description

The Mitsubishi Uni Jetstream 4&1 Multi-Function Pen is what happens when everyday practicality is given a quietly clever upgrade. Housing four ballpoint inks and a mechanical pencil in one streamlined barrel, it’s designed for people who like their writing tools efficient, dependable, and rather pleasant to use—now offered in newly released colour variants for a contemporary touch.

Powered by Uni’s celebrated Jetstream ink, this pen reduces writing resistance by up to 40% compared to conventional oil-based ballpoints. The result is an exceptionally smooth glide across the page, whether you write quickly, slowly, or with a firm hand. Fast writers and left-handers will especially appreciate the quick-drying performance, which helps keep pages neat and smudge-free.

The 0.5 mm ballpoint tips strike a fine balance between clarity and presence, producing crisp, dark lines thanks to a high-density pigment blend with roughly twice the density of standard inks. The matching 0.5 mm mechanical pencil adds welcome versatility for planning, sketching, or moments when graphite simply feels right. A spring-loaded tip combined with a twin-ball mechanism supports the low-viscosity ink while preventing leaks and backflow, ensuring consistent, reliable performance.

What Makes It Work So Well

  • Exceptionally Smooth Writing: Ultra-low-friction Jetstream ink reduces drag by up to 40%.

  • Crisp, Bold Lines: High-density ink produces clear, dark writing on any paper.

  • Clean and Reliable Design: Quick-drying ink and a twin-ball mechanism minimise smudging and prevent leaks.

Details

  • Ink: Oil-Based (Black, Red, Blue, Green)
  • Ballpoint Pen Tip: 0.5 mm
  • Mechanical Pencil: 0.5 mm
  • Barrel Diameter: 13.7 mm
  • Length: 147.6 mm
  • Material: Oil-Based Ink
  • Country of Origin: Japan

The Mitsubishi Uni Jetstream 4&1 Multi-Function Pen is what happens when everyday practicality is given a quietly clever upgrade. Housing four ballpoint inks and a mechanical pencil in one streamlined barrel, it’s designed for people who like their writing tools efficient, dependable, and rather pleasant to use—now offered in newly released colour variants for a contemporary touch.

Powered by Uni’s celebrated Jetstream ink, this pen reduces writing resistance by up to 40% compared to conventional oil-based ballpoints. The result is an exceptionally smooth glide across the page, whether you write quickly, slowly, or with a firm hand. Fast writers and left-handers will especially appreciate the quick-drying performance, which helps keep pages neat and smudge-free.

The 0.5 mm ballpoint tips strike a fine balance between clarity and presence, producing crisp, dark lines thanks to a high-density pigment blend with roughly twice the density of standard inks. The matching 0.5 mm mechanical pencil adds welcome versatility for planning, sketching, or moments when graphite simply feels right. A spring-loaded tip combined with a twin-ball mechanism supports the low-viscosity ink while preventing leaks and backflow, ensuring consistent, reliable performance.

What Makes It Work So Well

  • Exceptionally Smooth Writing: Ultra-low-friction Jetstream ink reduces drag by up to 40%.

  • Crisp, Bold Lines: High-density ink produces clear, dark writing on any paper.

  • Clean and Reliable Design: Quick-drying ink and a twin-ball mechanism minimise smudging and prevent leaks.

Details

  • Ink: Oil-Based (Black, Red, Blue, Green)
  • Ballpoint Pen Tip: 0.5 mm
  • Mechanical Pencil: 0.5 mm
  • Barrel Diameter: 13.7 mm
  • Length: 147.6 mm
  • Material: Oil-Based Ink
  • Country of Origin: Japan
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Delivery & Returns

 

Orders £35+ UK Royal Mail delivery within 5 days, Monday to Friday. Free on orders over £35.  FREE
Tracked Delivery 48

Royal Mail 48, tracked. Delivery within 48 hours, Monday to Friday. Tracking number provided.

£3.99
Tracked Delivery 24

Royal Mail 24, tracked. Delivery within 24 hours, Monday to Friday. Tracking number provided.

£4.99
Next Day Delivery Delivery on the following working day on orders purchased before 12:00pm, 5 days a week. You'll receive a tracking number with updates about the progress of your order. Signature required.

£7.99

International Delivery

Shipping costs are calculated automatically at the checkout when both the destination and delivery service are selected.

Calculated at checkout
Customs & Import Charges In some cases, customs and import duties may be charged as your parcel reaches its destination country. The Journal Shop has no control over these charges and we can't tell you what the cost would be, as they will vary from country to country. Any charges on a parcel must be paid by the person receiving the parcel. To be paid by customer