OMEGA
310.30.42.50.04.001 Speedmaster
round
Domed, scratch‑resistant sapphire crystal with anti‑reflective treatment inside
Steel
42 mm
20 mm
5 bar (50 metres / 167 feet)
13.2 mm
White
50 hours
Manual‑winding
Omega 3861
Steel
Silver
Foldover clasp with comfort setting