Seiko Instruments Inc. 6R35A

The 6R35A (also referenced as 6R35) is an automatic movement produced by Seiko Instruments Inc. It measures 27.4mm in diameter, beats at 28,800 vibrations per hour, and delivers approximately 70 hours of power reserve. Part of Seiko's in-house 6R family, the caliber incorporates a date complication and represents a higher-end offering within their movement lineup. The 6R35A remains in current production.