Stuhrling Original Men's Automatic Gold-Tone and Leather Sport Watch, Color:Black (Model: 136.33451) Quality automatic movement; functions without a battery; powers automatically with the movement of your arm Reliable automatic-self-wind movement 22 jewels Master calendar (day, date, and month) and 24-Hour complications Krysterna scratch resistant crystal Water resistant to 165 feet (50 M): suitable for swimming and showering