Since 1993, the Seamaster Professional Diver 300M has enjoyed a legendary following. Today’s modern collection has embraced that famous ocean heritage and updated it with OMEGA’s best innovation and design.This 44 mm chronograph model is crafted from stainless steel and includes a polished black ceramic bezel with a white enamel diving scale. The pushers are also polished black ceramic, as well as the dial which features laser-engraved waves and a date window at 6 o’clock.The subdial hands are rhodium-plated, along with all other hands and indexes which are filled with white Super-LumiNova.The watch is presented on a black rubber strap and is driven by the OMEGA Master Chronometer Calibre 9900, which can be seen through the sapphire-crystal on the wave-edged caseback. Steel on Rubber strap Anti-magnetic The movement is unaffected by exposure to strong magnetic fields, even those greater than 1.5 tesla (15,000 gauss).
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.)
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.
Small seconds A hand on a sub-dial which tracks seconds typically it completes a full rotation in one minute.
Time zone function Allows the hour hand to be easily adjusted to different time zones without stopping the watch.
Transparent case back A transparent case back - frequently made of sapphire - makes it possible to see the movement inside the watch.
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.
Total product weight (approx.): 143 g
Between lugs: 21mm
Lugtolug: 52.8mm
Thickness: 17.2mm
Case: Steel
Case diameter: 44mm
Water resistance: 30 bar (300metres / 1000 feet)
Dial color: Black
Crystal: Domed scratchresistant sapphire crystal with antireflective treatment on both sides
Strap type: Rubber strap
Strap color: Black
Strap surface: Rubber
Strap underside: Rubber
Buckle type: Pin buckle
Buckle material: Stainless steel