Handsome to the core, this watch goes one step further with a self-recharging battery for worry-free operation. Brand: Seiko Dial Color: Black Strap: Black leather Clasp: Buckle Movement: Quartz Water Resistance: 30m Case Width: 28.5mm Case Thickness: 6.1mm Bracelet Dimensions: 8 long, 22mm wide Model No.: SUP881 Special Features: Powered by light natural and artificial for a free and limitless power supply; 6-month power reserve; Hardlex crystal Jewelry photos are enlarged to show detail.