Omega Speedmaster Chronoscope 43 mm steel case Transparent back Blue anodized aluminium bezel ring with tachymeter scale Scratch-resistant sapphire crystal with anti-reflective treatment on both sides Silver dial Calibre 9908 manual-winding chronometer movement with chronograph and small seconds Water resistant to 50 metres (167 feet) Brand new and complete with everything! **This auction is for an authentic OMEGA watch and is 100% Guaranteed** Hello my name is Jason Greis and I am the owner of Greis Jewelers in Farmington Hills, Michigan. We are an authorized dealer for Franck Mueller, Corum, Omega, Bell & Ross, and several other watch brands. .