Chase-Durer Men's 990.2BL-ALLI Starburst Automatic Blue-Stitched Leather Strap Watch Quality Swiss Automatic movement; functions without a battery; powers automatically with the movement of your arm Scratch-resistant sapphire crystal with anti-reflective coating Solid 316L stainless steel case with carbon-fiber dial; genuine American Alligator leather strap with blue stitching Super-Luminova advanced illumination system; screw down case back with tinted exhibition window; date function at three o'clock with magnifier Water resistant to 330 feet (100 M): suitable for snorkeling, as well as swimming, but not diving