JIOS 3rd Model “OMI”
OMI is JIOS’s third model, named after Omi, the former name of Shiga Prefecture where JIOS is based. It’s a quartz dress watch in a timeless classic style, featuring a small-seconds sub-dial. Because we want as many people as possible to experience a JIOS watch, we’re offering it at an accessible price. The compact 35 mm case, a size often seen in vintage classics, blends traditional proportions with a modern look. With a wide range of colour combinations, this model is easy to wear for both men and women.
This model is assembled in JIOS’s own workshop. Our in-house watchmaker builds each piece and delivers a high-quality watch that meets our internal standards.


A Tochigi Leather NATO strap that develops a beautiful patina over time.

A classic-sized profile with a matte-finished case.

A perfectly balanced size that’s ideal for use as a pair watch!

Japanese quartz movement & sapphire crystal.















