Stuhrling Original Men's Automatic Stainless Steel and Leather Casual Watch, Color:Black (Model: 42AA.331555) Quality automatic movement; functions without a battery; powers automatically with the movement of your arm Reliable automatic-self-wind movement 21 jewels Power reserve indicator, dual time zone and date complications at the three o'clock position Krysterna scratch resistant crystal Water resistant to 165 feet (50 M): suitable for swimming and showering