DETAILS
Since 1993, the Seamaster Professional Diver 300M has enjoyed a legendary following. This 44 mm chronograph is a Numbered Edition model and is built from grade 2 titanium, 18K Sedna™ gold and tantalum, which can be found on the base of the bezel and the middle links of the bracelet.
The 18K Sedna™ gold bezel ring features a laser-ablated diving scale, while the polished blue ceramic [ZrO2] dial is distinguished by laser-ablated waves, a date window at 6 o’clock, and subdial rings with touches of 18K Sedna™ gold.
The side of each case includes an 18K Sedna™ gold plate engraved with each unique Numbered Edition number. Turning the watch over reveals an OMEGA Seahorse, which has been laser-engraved and lacquered white on the sapphire crystal. Through the glass, you can see the OMEGA Co-Axial Master Chronometer Calibre 9900, certified by the Swiss Federal Institute of Metrology (METAS).
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Anti-magnetic
The movement is unaffected by exposure to strong magnetic fields, even those greater than 1.5 tesla (15,000 gauss).
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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.
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Chronometer
Label given to a watch which has undergone precision tests and received a certificate from an official body (COSC).
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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.
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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.)
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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).
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Numbered edition
A watch series each of whose pieces is numbered sequentially in the order it is produced.
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Screw-in crown
Self-locking crown, screwed into the tube of the case, used for highly water resistant divers' watches.
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Small seconds
A hand on a sub-dial which tracks seconds typically it completes a full rotation in one minute.
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Time zone function
Allows the hour hand to be easily adjusted to different time zones without stopping the watch.
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Transparent caseback
A transparent caseback - frequently made of sapphire - makes it possible to see the movement inside the watch.
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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.
- Between lugs: 21 mm
- Lug‑to‑lug: 52.8 mm
- Thickness: 17.4 mm
- Case diameter: 44 mm
- Case: Titanium ‑ Tantalum ‑ Sedna™ Gold
- Water resistance: 30 bar (300 metres / 1000 feet)
- Total product weight (approx.): 190 g
- Dial color: Blue
- Crystal: Domed scratch‑resistant sapphire crystal with anti‑reflective treatment on both sides
- Material: Titanium ‑ Tantalum ‑ Sedna™ Gold
- Type of Clasp: Foldover clasp with comfort setting and diver extension.
