Hamilton watch american classic jazzmaster day date h42565151 the hamilton jazzmaster day date auto houses the exclusive h 40 calibre which offers an impressive 80 hours of power reserve the hamilton jazzmaster watch from the iconic american classics collection emanates a stealthy yet confident persona the 42mm automatic is manufactured to withstand water depths of 50 meters whilst also providing supreme anti reflective and scratch resistant qualities within its sapphire crystal glass front