Stuhrling Original Men's Automatic Stainless Steel and Leather Casual Watch(Model: 166.33152) Quality Automatic movement; Functions without a battery; Powers automatically with the movement of your arm Reliable automatic-self-wind movement 29 Jewels Grand Calendar with Day, Date, Month and Year Complications and Open Heart with Faux Tourbillon Flywheel Krysterna Scratch resistant crystal Water resistant to 165 feet (50 M): suitable for swimming and showering