Omega Speedmaster Moonwatch Chronograph Watch (3184.108.40.206.01.006) Caliber 1863 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 exhibition case back. Water resistant to 50M. Stainless steel bracelet.