Stuhrling Original Men's Automatic Stainless Steel and Leather Casual Watch, Color:Black (Model: 177.33152) Quality Automatic movement; Functions without a battery; Powers automatically with the movement of your arm Manual/Self-Winding Mechanical Movement 23 Jewels & Quartz Movement Features a dual time zone complication and a date window at the 6 o'clock position Krysterna Scratch resistant crystal Water resistant to 165 feet (50 M): suitable for swimming and showering