U.S. Polo Assn. Sport Men's US9279 Black Analog-Digital Rubber Strap Watch Quality quartz movement Case diameter: 50 mm Alarm, EL backlight, 12/24 hour format selectable Buckle clasp Not water resistant Quality quartz movement Case diameter: 50 mm Alarm, EL backlight, 12/24 hour format selectable Buckle clasp Not water resistant