Pens and Pencils | Reviews and Data

Uni Jetstream Edge

On October 3, 2019 Mitsubishi Pencil announced the Uni Jetstream Edge, the first “ultra-fine” ballpoint ever. This traditional ballpoint pen — with oil-based ink — has a 0.28 mm tip, a size which only gel- and water-based inks have been able to use so far.

This is an impressive innovation and will be a great pen for journaling.

The Jetstream Edge’s launch date was set for December 20, 2019, though only limited quantities will be sold at the time. The expected retail price is 1000 JPY. The model will be the SXN-1003-28.

Uni Jetstream Edge Line
Uni Jetstream Edge Line

The Jetstream Edge will only be sold in black ink with a 0.28 mm tip size. The pen body will be sold in 5 colors: black, champagne gold, navy, white red, and orange.

Being a Jetstream, this is considered a ballpoint pen by its manufacturer because it used an oil-based ink, but we’d consider this ink a “modern” ballpoint or even a hybrid ink. The ink is nothing new here, but rather its the tip size, which was clearly made possible by Uni progressing their manufacturing technology.

The writing should be as smooth as the rest of the Jetstream line thanks to the low-viscosity oil-based ink but the skinny tip will surely be somewhat pointy and will likely create ridges in the other side of most papers.

Jetstream Edge, left; Traditional pen, right

The small ball diameter is housed in a non-standard writing tip. Instead of cone the Edge has a curved taper which then goes into a flat cone with the tiny ball at the end. This is called the “Stream Edge” tip.

The Edge will be a specialized pen designed for tiny, fine writing. This will be ideal for journaling, Hobonichi, bullet journals, and other very small writing that if often done on lightweight paper.

The pen will used the SXR-203-28 refill, which will be sold in blue, black, and red.

Uni Jetstream Edge Information

Street Price Check Price
Manufacturer Uni
Pen Type Hybrid
Barrel Color Black, White, Platinum, Blue, Orange
Barrel Material Metal
Grip Color Black, White, Platinum, Blue, Orange
Grip Material Metal
Country of Origin Japan
MSRP $10
Still Sold Yes
Release Year2019
Similar To
Capped? Retractable?Retractable - Top Button
Weight (g)