Gender: Men<br />Color: Silver，Gold<br />Item size:<br />Diameter:   7#=17mm / 8#=18mm/ 9#=19mm/ 10#=20mm/ 11#=21mm/ 12#=22cm<br />Circumference: 7#=53.4mm/8#=56.9mm/9#=59.5mm/10#=62.1mm/11#=65.9mm/12#=69mm<br />Metals Type: Titanium Alloy<br />Feature: a