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

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).

Features
Anti-magnetic
Chronograph
Chronometer
Date
Helium escape valve
Master Chronometer Certified
Numbered edition
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: 17.4 mm
Case diameter: 44 mm
Case: Titanium ‑ Tantalum ‑ Sedna™ Gold
Water resistance: 30 bar (300 metres / 1000 feet)
Total product weight (approx.): 190 g
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: Titanium ‑ Tantalum ‑ Sedna™ Gold
Type of Clasp: Foldover clasp with comfort setting and diver extension

Reference
210.60.44.51.03.001