OMEGA
310.30.42.50.01.001 Speedmaster
ROUND
Hesalite crystal with OMEGA logo in the centre
Steel
Steel
Aluminium bezel ring
42MM
50 M
Black dial
Small seconds sub-dial, 30-minute recorder and 12-hour recorder
50H
AUTOMATIC WINDING
OMEGA 3861
Chronograph
Steel
FOLD-OVER CLASP