Omega Speedmaster Moonwatch Master Chronometer Chronograph 310.

Omega Speedmaster Moonwatch Co-Axial Master Chronometer Chronograph (310.

Omega 3861 Manual Manual Winding chronograph movement with central chronograph hand. Small 30 minute counter at 3 o'clock position, 12 hour counter at 6 o`clock position, 60 seconds counter at 9 o'clock position. Black dial with index hour counters. Steel bezel stamped with a Tachymeter scale and set on a 42 mm stainless steel case. Sapphire crystal on top and sapphire display caseback. Water resistant to 50M. Black leather straps with steel folding clasp.