gender:unisex
<br />1.material :metal 
<br />2.style：1  2  3  4  5  6  7  8  9  10   11  12  13  14  15  16  17  18  19  20
<br />3.size ：20.8 mm*14.8 mm
<br />4.package：packing in sturdy to ensure protection from damage