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Seamaster Diver 300M 42 mm
210.30.42.20.03.003
A blue ceramic bezel with a Summer Blue enamel (Grand feu) diving scale encircles the dial, which has rhodium-plated skeleton hands and raised indexes, filled with a unique light blue Super-LumiNova.
Turning the watch over reveals a stamped commemorative Seamaster logo depicting a trident-bearing Poseidon and two seahorses: OMEGA’s 1956 original and the brand’s current design. Behind which sits OMEGA’s Co-Axial Master Chronometer calibre 8800, certified at the industry’s highest level by the Swiss Federal Institute of Metrology (METAS).
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Seamaster Diver 300M 42 mm
210.30.42.20.03.003
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Features
Features
Anti-magnetic : The movement is unaffected by exposure to strong magnetic fields, even those greater than 1.5 tesla (15,000 gauss).
Chronometer : Label given to a watch which has undergone precision tests and received a certificate from an official body (COSC).
Date : The day of the month, displayed in a window on a watch dial at the 3 or 6 o’clock position, or within a subdial at 9 o’clock.
Helium escape valve : Decompression system which allows helium to escape from inside the watch when the watch is worn for professional use in pressure chambers. (Long-term underwater work, crude oil exploration, etc.)
Master Chronometer Certified : Guaranteeing the Swiss industry’s highest standard of precision, performance and magnetic-resistance, as set by the Swiss Federal Institute of Metrology (METAS).
Screw-in crown : Self-locking crown, screwed into the tube of the case, used for highly water resistant divers’ watches.
Unidirectional rotating bezel : A bezel which turns in only one direction. Particularly useful for divers who cannot accidentally rotate it in the wrong direction, which could cause them to miscalculate their dive times. A rotating bezel makes it easy to measure elapsed time.
Technical Data
Reference : 210.30.42.20.03.003
Between lugs : 20 mm
Lug‑to‑lug : 49.90 mm
Thickness : 13.56 mm
Case diameter : 42 mm
Case : Steel
Dial colour : Blue
Crystal : Domed scratch‑resistant sapphire crystal with anti‑reflective treatment on both sides
Water resistance : 30 bar (300 metres / 1000 feet)
Total product weight (approx.) : 201 g
Calibre : Omega 8800
Movement Type : Self winding
Power reserve : 55 hours
Bracelet
Material : Steel
Type of Clasp : Foldover clasp with comfort setting and diver extension










