Chase-Durer Men's 607.1BB-LEA Warhawk Mechanical Black Dial Vintage Leather Watch Swiss-Made with UNITAS 6497 precision 17-Jewel Swiss Mechanical-hand-wind movement; Hand-wind daily for best precision; 44-Hour power reserve Dome and double-curved K1 crystal with anti-reflective coating Solid titanium case; Vintage WWII style genuine leather strap Super-Luminova advanced illumination system; seconds sub dial at 9 o'clock; Arabic numerals on dial Water resistant to 330 feet (100 M): suitable for snorkeling, as well as swimming, but not diving