Hamilton Jazzmaster mens automatic chronograph watch. Blue dial with luminous silver-tone hands and index hour markers, featuring minute outer markers and date display at 4 o'clock. Includes three sub-dials for 60-second, 30-minute, and 12-hour chronograph measurements. Stainless steel case equipped with a black leather strap secured by a tang clasp; sapphire crystal provides scratch resistance, automatic mechanical movement offers approx. 60 hours power reserve; skeleton case back design; round shape in 42 mm diameter (case thickness 15.5 mm) and band width 20 mm; water resistant to 100 meters / 330 feet depth.