Omega - a Seamaster Professional 300M watch, 41mm. Omega - a Seamaster Professional 300M bracelet watch. Stainless steel case and calibrated bezel. Case width 41mm. Reference 168 1640, serial 8063108. Signed automatic calibre 1120. Blue dial with luminous hour markers, date aperture to three. Fitted to a signed stainless steel bracelet with folding clasp.