Feature:1. Made of quality TPU material, wear resistant, sturdy and durable.2. With hook&loop, thick and soft neoprene material, ensure ankle comfort.3. The circuit board is protected by heat-shrinkable tube, safer.4. Lightweight and compact size, easy to carry and store.5. Elastic, stretchable, suitable for any size ankle, available for body, surfboard etc.Specification:@font-face{font-family:"Times New Roman";}@font-face{font-family:"宋体";}@font-face{font-family:"Calibri";}p.MsoNormal{mso-style-name:正文;mso-style-parent:"";margin:0pt;margin-bottom:.0001pt;mso-pagination:none;text-align:justify;text-justify:inter-ideograph;font-family:Calibri;mso-fareast-font-family:宋体;mso-bidi-font-family:'Times New Roman';font-size:10.5000pt;mso-font-kerning:1.0000pt;}span.msoIns{mso-style-name:"";text-decoration:underline;text-underline:single;color:blue;}span.msoDel{mso-style-name:"";text-decoration:line-through;color:red;}@page{mso-page-border-surround-header:no; mso-page-border-surround-footer:no;}@page Section0{}div.Section0{page:Section0;}Condition: 100% brand new@font-face{font-family:"Times New Roman";}@font-face{font-family:"宋体";}@font-face{font-family:"Calibri";}@font-face{font-family:"微软雅黑";}@font-face{font-family:"Arial";}p.MsoNormal{mso-style-name:正文;mso-style-parent:"";margin:0pt;margin-bottom:.0001pt;mso-pagination:none;text-align:justify;text-justify:inter-ideograph;font-family:Calibri;mso-fareast-font-family:宋体;mso-bidi-font-family:'Times New Roman';font-size:10.5000pt;mso-font-kerning:1.0000pt;}span.msoIns{mso-style-name:"";text-decoration:underline;text-underline:single;color:blue;}span.msoDel{mso-style-name:"";text-decoration:line-through;color:red;}@page{mso-page-border-surround-header:no; mso-page-border-surround-footer:no;}@page Section0{}div.Section0{page:Section0;}transparent blue, rose redwhite.