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The Spring Drive uses a conventional mainspring [3] and barrel [4] along with automatic and/or stem winding to store energy, just as in a mechanical watch. [3] However, the escapement and balance wheel in mechanical watches is replaced by Seiko's Tri-synchro Regulator system, a phase-locked loop wherein a rotor, which Seiko refers to as a "glide wheel", is powered by the mainspring barrel via ...
Some Grand Seiko timepieces also incorporate the company's Spring Drive movement, a movement that is a combination of both automatic and quartz timekeeping methods, leading to unparalleled accuracy in the world of automatic wristwatches. The most famous example is the SBGA011 Grand Seiko "Snowflake", housing the 9R Spring Drive movement.
Founder of Seiko, Kintaro Hattori, started in 1982 and produced pocket watch in 1985, first Japanese wrist watch Seiko Laurel in 1913, watch Grand Seiko (グランドセイコー), in 1960, was accurate as Switzerland Chronometer watch then the world's first quartz clock wristwatch Seiko Quartz-Astron 35SQ in 1969. – Tokyo
'Seiko Quartz Automatic Generating System' (A.G.S. = early Kinetic), Perpetuum Nobile (produced in 1989), Cal. 7M45, No. 246 of 700 Seiko AGS SCUBA Diver 200m 5M23-6A60, 1993 Automatic quartz is a collective term describing watch movements that combine a self-winding rotor mechanism [ 1 ] (as used in automatic mechanical watches ) to generate ...
Seiko Watch delegates the manufacture of some of its high-end quartz and spring drive watches (Seiko Astron, Grand Seiko, Credor, etc) to the Wearable Products Operations Division of Epson. Time Module (TMI), a member of the Seiko Group, was established in 1987 with funding from Seiko Watch Company, Seiko Instruments Inc., and Seiko Epson Corp ...
The company has developed many timepiece technologies, such as the world's first portable quartz timer (Seiko QC-951) in 1963, the world's first quartz watch (Seiko Quartz Astron 35SQ) in 1969, the first automatic power-generating quartz watch (Seiko Auto-Quartz) in 1988, and the Spring Drive watch movement in 1999.