Omega gents seamaster ploprof 1200 m omega co axial master chronometer 55 x 48 mm reliable even at 4000 feet beneath the waves the famous ploprof timepiece has a long history as omegas most water resistant divers watchmovement self winding movement with co axial escapementpower reserve 60 hours case titaniumcase diameter 55 x 48 mmdial whitewater resistance 120 bar 1200 metres 4000 feetbi directional rotating bezeltitanium on titanium