Seiko 6R5J

The Seiko caliber 6R5J is an automatic in-house mechanical movement manufactured in Japan. It operates at 21,600 vph with a 72-hour power reserve and features an open balance wheel with a 24-hour indicator at the 6 o'clock position. The movement uses a ball-bearing rotor and Diashock shock protection. It is found in the Presage Sharp Edge series, announced in April 2023.