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'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 ...
Portrait of Kintarō Hattori, 1916. In 1881, Seiko founder Kintarō Hattori opened a watch and jewelry shop called "K. Hattori" (服部時計店) in Tokyo. [12]Kintarō Hattori had been working as clockmaker apprentice since the age of 13, with multiple stints in different watch shops, such as “Kobayashi Clock Shop”, run by an expert technician named Seijiro Sakurai; “Kameda Clock Shop ...
A diving watch, also commonly referred to as a diver's or dive watch, is a watch designed for underwater diving that features, as a minimum, a water resistance greater than 1.1 MPa (11 atm), the equivalent of 100 m (330 ft). The typical diver's watch will have a water resistance of around 200 to 300 m (660 to 980 ft), though modern technology ...
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The Scuba Schools International (SSI) Open Water Diver Course (OWD) is a basic dive certification equivalent to the standard Autonomous Diver. The training includes at least 4 open water dives, which can only be carried out after the successful completion of the theoretical training. SSI allows OWD divers to dive to a maximum depth of 18 meters ...
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 ...
Recreational diving limit for divers aged under 12 years old and EN 14153-1 / ISO 24801-1 level 1 (Supervised Diver) standard. [13] 18 m (60 ft) Recreational diving limit for Open Water Divers (e.g. PADI, NAUI). 20 m (66 ft) Recreational diving limit for EN 14153-2 ISO 24801-2 level 2 "Autonomous Diver" standard. [14] 21 m (69 ft)
The Royal Orient line was discontinued around 2016, likely to prevent cannibalism between it and fellow Seiko group brands Grand Seiko, and Credor. To celebrate 70 years of the Orient Star line, the Orient Star skeleton watch was introduced with a silicon escapement made using Epson's MEMS technology, which has been used in high end Seiko ...
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