Stuhrling Original Men's Automatic 18k-Gold-and-Steel and Stainless Sport Watch, Color:Silver-Toned (Model: 161.332236) Quality automatic movement; functions without a battery; powers automatically with the movement of your arm Reliable automatic-self-wind movement 21 jewels Features a rotating bezel and date at six o'clock position with magnifier Krysterna scratch resistant crystal Water resistant to 330 feet (100 M): suitable for snorkeling, as well as swimming, but not diving