Seiko 6R55

The Seiko 6R55 is an automatic movement manufactured in Japan. It operates at a frequency of 21,600 vibrations per hour and provides approximately 72 hours of power reserve when fully wound. The movement features a date complication at the 3:00 position and includes hand-winding capability. It uses Seiko's Diashock shock protection system and Magic Lever winding mechanism. The 6R55 is an in-house caliber introduced in 2023 and remains in production, found in King Seiko watches.