Ulysse Nardin Men's Automatic Gold and Leather Dress Watch(Model: 676-88) Quality Automatic movement; Functions without a battery; Powers automatically with the movement of your arm Scratch-resistant-sapphire crystal Case diameter: 42 mm Rose-gold case; Silver dial; Date function Water resistant to 99 feet (30 M): withstands rain and splashes of water, but not showering or submersion