U.S. Polo Assn. Sport Men's US9212 Black Silicone Digital Watch Quality quartz movement Case diameter: 45 mm Buckle closure Alarm, chronograph, EL backlight, 12/24 hour format selectable Easy-to-read digital display Quality quartz movement Case diameter: 45 mm Buckle closure Alarm, chronograph, EL backlight, 12/24 hour format selectable Easy-to-read digital display