Round
Scratch‑resistant sapphire crystal with anti‑reflective treatment inside
Sapphire crystal
Steel
Black ceramic bezel ring
42 mm
20 mm
5 bar (50 metres / 165 feet)
13.54 mm
Black varnished and lacquered double plate step dial
Moonwatch style hands
50 hours
Manual‑winding
OMEGA Co-Axial Master Chronometer Calibre 3861
Hour, minutes, small seconds, 30-minute recorder, 12-hour recorder, central chronograph
Polished-brushed stainless steel
Foldover clasp with comfort setting