188.8.131.52.01.001 Omega This watch has 41 mm 18K yellow gold case. Ceramic bezel ring has an OMEGA Ceragold™ diving scale. Black dial with 18K Yellow gold hands coated with “vintage” Super-LumiNova. Brown leather bracelet. Automatic movement. Functions: hours, minutes, seconds. Water resistance up to 300 m./ 1000 ft. 184.108.40.206.01.001 Omega 18K Yellow Gold watch.