Grand Seiko Sport Collection

This is Grand Seiko's traveller's watch, and it runs on Spring Drive — a movement powered by a mainspring like any mechanical watch but regulated by a quartz oscillator, so the seconds hand glides in continuous motion rather than ticking. Accuracy is quoted at one second per day. A GMT hand and 24-hour bezel track a second time zone, and the 44mm steel case is Zaratsu-polished by hand.

Reference: SBGE277G
Movement: Spring Drive GMT, calibre 9R66 — continuous glide seconds
Power reserve: approx. 72 hours
Case: Stainless steel, 44 mm, Zaratsu polished
Water resistance: 200 m
Year: 2026 — Full set