Otsuka Lotec Steel Watch No. 5 KAI

Otsuka Lotec No. 5 KAI made exclusively for Japan, this reference presents a raw, technical alternative to conventional central-hand timekeeping. Time reading relies on a wandering satellite hour module traveling across a 120-degree arched chapter ring, paired with a small-second disc at 5:30. Stripped of a traditional bezel, its 40.5mm steel case features a circular-brushed finish, hooded lugs, and an offset knurled crown placed at 4:30. Beneath the display, the automatic Miyota 90S5 drives the proprietary wandering-hour module, beating at 28,800 vibrations per hour with approximately 40 hours of power reserve.

This is a pre-owned Otsuka Lotec No. 5 KAI Steel Watch. It comes with its official paperwork, a secondary strap, and the manufacturer’s box.