Omega Seamaster Diver 300M 43.5mm black ceramic on rubber strap

Since 1993, the Seamaster Professional Diver 300M has enjoyed a legendary following. OMEGA’s 21st century models stay true to the original’s dive watch design, while introducing exciting new materials and movements.
On this 43.50 mm model, black ceramic [ZrO2] dominates. The case, bezel, wave-pattern dial, crown and helium escape valve, all in the same striking material, give the watch a very distinctive, uniform and sculptural look. To ensure visibility without affecting the overall aesthetic, OMEGA has introduced anthracite Super-LumiNova to the diving scale, the black PVD indexes and skeleton hands – and dot at 12H.
Completing the look is an integrated black rubber strap with black ceramic buckle. Adding some light to the darkness is a window with a clear view of the movement. Visible through the sapphire-crystal on the wave-edged caseback is OMEGA’s Co-Axial Master Chronometer Calibre 8806.
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.
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.
Screw-in crown
Self-locking crown, screwed into the tube of the case, used for highly water resistant divers’ watches.
Transparent caseback
A transparent caseback – 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.
Technical Data
Reference
210.92.44.20.01.003
Between lugs 21mm
Lug-to-lug 51.5mm
Thickness 14.5mm
Case diameter 43.5mm
Case
Black ceramic
Dial colour Black
Crystal
Domed scratch-resistant sapphire crystal with anti-reflective treatment on both sides
Water resistance
30 bar (300metres / 1000 feet)
Total product weight (approx.)
114 g
Calibre: Replica Omega 8806
Movement Type Self winding
Power reserve 55 hours
Case Measurements
1. Between lugs This measures the space where a strap or bracelet would be placed.
2. Lug-to-lug
This is the full length of the case, from the top lugs to the bottom lugs.
3. Case diameter This is the full width of the watch’s case, excluding the crown and pushers.
4. Thickness When viewed from the side, this measures from the base of the watch to the surface of the glass.
Strap
Strap color Black
Strap type Rubber strap
Strap surface Rubber
Strap underside Rubber
Buckle type Pin buckle
Buckle material Ceramic