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Seamaster Diver 300M 42 mm
522.21.42.20.04.001
The 42 mm case is crafted from stainless steel and 18K Moonshine™ Gold, with a bezel that features a laser-structured diving scale in positive relief, and a single dot of Super-LumiNova at 12 o’clock.
Behind the domed and scratch-resistant sapphire crystal on the front, the laser-engraved white ceramic dial has been given a matte finish with polished waves in positive relief. Along with transferred markings in dark grey, the date display at 6 o’clock is inscribed with Paris 2024 typography in black. All of the hour markers are presented in diamond-polished 18K Moonshine™ Gold with white Super-LumiNova, while the facetted hands are finished with an 18K Moonshine™ Gold PVD treatment, including the central seconds hand with its Paris 2024 logo.
On the reverse side, the commemorative stainless steel caseback includes OMEGA’s patented NAIAD LOCK. There is a stamped medallion with a mirror-polished and frosted Paris 2024 logo in 18K Moonshine™ Gold, along with the stamped words, "Paris 2024" and the Olympic Rings, which are mirror-polished on a frosted structure.
The watch is set on a stainless steel bracelet with OMEGA’s new Quick Change System and a patented rack-and-push extendable foldover clasp with extra diver extension. It is driven by the OMEGA Co-Axial Master Chronometer Calibre 8800 and is delivered in a special presentation box.
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Seamaster Diver 300M 42 mm
522.21.42.20.04.001
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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 : 522.21.42.20.04.001
Between lugs : 20 mm
Lug‑to‑lug : 50.00 mm
Thickness : 13.72 mm
Case diameter : 42 mm
Case : Steel
Dial colour : White
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.) : 204 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





