A pre-owned Omega Seamaster chronograph with automatic movement and black dial, featuring a silver-tone stainless steel case. This watch boasts an unidirectional rotating bezel equipped with a black ceramic insert for elapsed time measurement during diving activities. The black dial displays analog hands in luminous silvery white with hour markers also emitting light. Minute markers are present on the outer rim. It includes date display at 6 o'clock and two sub-dials indicating seconds and hours of operation when chronograph activated. Powered by Omega Calibre 9900 automatic movement (based on 9300), this mechanical marvel contains 54 jewels, operates at a frequency of 28'800 vib/hour, has an approximate 60-hour power reserve, and is protected by sapphire crystal resistant to scratches. The screw-down winding crown allows for secure closure when not in use, while the transparent case back offers visibility into its intricate mechanics. Measuring approximately 44 mm with a round shape, it features a bracelet made of silver-tone stainless steel measuring about 21 mm wide and extending up to 7.5 inches (approx.). It is water-resistant to 300 meters or 1000 feet and functions as a chronometer certified timekeeper.