Baume & Mercier Men's 8689 Classima Skeleton Display Watch Quality Swiss Automatic movement; Functions without a battery; Powers automatically with the movement of your arm Stainless Steel Case and Crown with Exhibition Caseback, Scratch-resistant sapphire crystal Black Guilloche Dial with Open Balance Aperture; Black Leather Strap Water resistant to 99 feet (30 M): withstands rain and splashes of water, but not showering or submersion Also Known As Model MOA8689, M0A08689, 8689, 08689