Breadcrumb
Steel on Steel
212.30.42.50.03.001
Note: watch no longer available
OMEGA’s sporty Seamaster collection is a tribute to the brand’s maritime legacy. This exquisite example of our renowned watchmaking pays homage to OMEGA’s dive watch heritage and our adventurous pioneering spirit.
This OMEGA Seamaster Diver 300M Chronograph features a lacquered blue dial with a 30-minute recorder at 3 o'clock, a 12-hour recorder at 6 o'clock and a small seconds dial at 9 o'clock. The polished blue ceramic unidirectional rotating bezel is mounted on a 41.5 mm stainless steel case with a helium-escape valve and an integrated date corrector at 10 o'clock.
The watch is presented on a stainless steel bracelet. This chronograph is powered by the OMEGA Co-Axial calibre 3330.
Chronograph
The chronograph function is a mechanism for measuring time intervals. A chronograph watch can therefore be used to time events while displaying the time like any traditional watch.
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.)
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.
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Self-winding chronograph with column-wheel mechanism and Co-Axial escapement. Free sprung-balance equipped with Si14 silicon balance spring. Officially certified chronometer.
Get the latest edition of our official Omega catalogue "The Collection".