Stuhrling Original Men's Automatic Stainless Steel and Leather Casual Watch, Color:Black (Model: 171.3215E54) Quality automatic movement; functions without a battery; powers automatically with the movement of your arm Reliable automatic-self-wind movement 20 jewels Hours and minutes with small seconds and quick-Set date complication. Krysterna scratch resistant crystal Water resistant to 165 feet (50 M): suitable for swimming and showering