Product Details + 40mm stainless steel case with unidirectional rotating time-lapse diver's bezel Stainless steel Oyster style SEL bracelet with flip-lock claspBlack dial with applied luminous hour markers and date window at 3:00Sapphire crystal with cyclops lens over date31 jewel automatic movement - cal. 3135Reference #16610TSerial number F8xxxxx- ca. 2003Watch is in excellent condition and has been serviced and polished.