Steel on steel
Seamaster Diver 300M Co‑Axial Chronometer GMT Chronograph 44 mm
Steel on steel
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 GMT Chronograph features a matt blue dial with 30-minute and 12-hour recorders and a small seconds sub-dial. There is a yellow GMT hand that matches the yellow 24-hour scale on the dial which makes it possible to keep track of time in a second time zone. The matt blue ceramic unidirectional rotating bezel is mounted on a 44 mm stainless steel case with a helium-escape valve.
The watch is presented on a stainless steel bracelet. This chronograph is powered by the OMEGA Co-Axial calibre 3603.
All OMEGA watches are delivered with a 5-year warranty that covers the repair of any material or manufacturing defects. Please refer to the operating instructions for specific information about the warranty conditions and restrictions.
24 hours GMT
Complicated watch with a function for measuring short time periods in addition to its function for permanently displaying hours, minutes and seconds.
Label given to a watch which has undergone precision tests and received a certificate from an official body (COSC).
The day of the month, displayed in a window on a watch dial typically at the 3 o'clock or 6 o'clock position.
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.)
Self-locking crown, screwed into the tube of the case, used for highly water resistant divers' watches.
A hand on a sub-dial which tracks seconds typically it completes a full rotation in one minute.
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.
Your watch and strap should go together perfectly, but that doesn't mean you can't experiment with different combinations. Why not mix things up and see what happens? You may discover a look that's as individual as you are.
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Self-winding chronograph with column wheel mechanism, free sprung-balance and Co-Axial escapement for greater precision and durability. 2nd time zone through 24 hour hand. 12 hour and 30 minute totalizers, start/stop push button, return-to-zero push button. Rhodium plated finish and gold plated engravings. Officially certified chronometer.
Get the latest edition of our official Omega catalogue "The Collection".