Seamaster Diver 300M Co‑Axial Master Chronometer Chronograph 44 mm

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 blue ceramic bezel with a white enamel diving scale. The pushers are also polished blue 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 stainless steel bracelet and is driven by the OMEGA Master Chronometer Calibre 9900, which can be seen through the sapphire-crystal on the wave-edged caseback.

Features
Anti-magnetic
Chronograph
Chronometer
Date
Helium escape valve
Master Chronometer Certified
Screw-in crown
Small seconds
Time zone function
Transparent caseback
Unidirectional rotating bezel

Case
Between lugs: 21 mm
Lug‑to‑lug: 52.8 mm
Thickness: 17.2 mm
Case diameter: 44 mm
Case: Steel
Water resistance: 30 bar (300 metres / 1000 feet)
Total product weight (approx.): 225 g
1. Between lugs
2. Lug-to-lug
3. Case diameter
4. Thickness

Dial and Crystal
Dial colour: Blue
Crystal: Domed scratch‑resistant sapphire crystal with anti‑reflective treatment on both sides

Bracelet
Material: Steel
Type of Clasp: Foldover clasp with comfort setting and diver extension

Reference
210.30.44.51.03.001