Grand Seiko Hi-Beat – Ref. 5646-7010, Juli 1971 (Suwa Seikosha) - Neuer Service / Revision (12/2025) GMT Movement: Japanese quartz movement

Movement: Japanese quartz movement

This watch is offered as a full set and includes:

and protection

2 mm (wearable up to approx

it brings the authentic character of selvedge denim to the world of watches

Grand Seiko Hi-Beat – Ref. 5646-7010, Juli 1971 (Suwa Seikosha) - Neuer Service / Revision (12/2025) GMT Movement: Japanese quartz movementThis elegant Grand Seiko Hi Beat automatic watch dates from July 1971 and was manufactured in the renowned Suwa Seikosha factory . It belongs to the famous 56GS series , which was produced from 1968 to 1974 and marked the transition from classic hand wound Grand Seikos to modern, automatic precision models. Background and historical significance The 56GS series replaced the previous 45GS and 61GS lines and introduced, for the first time, an automatic