YW0821B Features Alloy strap Perfect for every day wear Water-resistant for daily life water exposure Please keep the watch away from high pressure water flow General Specs Model 8166 Gender Male Movement  Quartz movement  Display Type Analog  Dial Cover Tempered glass Case Material Alloy Strap Material Alloy Dial Diameter 4 cm Strap Length 23 cm Strap Width 2.3 cm Package Details Weight: 84.53 g Size: 10.5*4.00*1.00 cm Package Includes * Watch