Sporty, ultra-modern design, powered by you. Crafted from durable stainless steel, this watch features a 43mm case, blue dial with a date window, and Swiss Super-LumiNova® detailing. This modern, contemporary design features an automatic movement powered by the motion of your wrist with no batteries required, showcased by an exhibition caseback. A matching stainless steel bracelet completes the design. Automatic watches do not contain batteries. They are charged by the movement of your wrist. If the watch is not worn, it will stop running in approximately 38 hours. To get started, turn the crown clockwise about 20-30 times until the second hand starts to move. You will most likely need to reset the time and date.