Grand Seiko Sport Collection

Hi-Beat 36000 with a true GMT: the movement beats ten times a second, twice the industry norm, and a fourth hand tracks a second time zone independently of the local hour. Building a mechanical calibre at that frequency is punishing, and Grand Seiko is one of very few houses that does it in series. Steel case, every surface Zaratsu-polished by hand.

Reference: SBGJ277G
Movement: Hi-Beat 36000 GMT automatic, Grand Seiko manufacture calibre
Power reserve: approx. 55 hours
Case: Steel, 44.2 mm
Complications: GMT second time zone
Water resistance: 200 m
Year: 2026 — Full set