Features:<br /><br />100% Brand new and high quality !<br /><br />Material:Nylon + Flat Fiber +ABS<br /><br />Size:S-XL<br /><br />Battery:Bulit in LIR2032 3.6V button battery<br /><br />Power:USB Charge<br /><br />Charging for 20 minutes，led dog collar can be used for about 2 hours<br /><br />Notice:<br /><br />Due to the different monitor and light effect，the actual color maybe a slight different from the picture color.<br /><br />Please allow 1-2cm differs due to manual measurement .Size:SWidth(cm/in):2.5/1Length(cm/in):35/13.8-43/16.9Size:MWidth(cm/in):2.5/1Length(cm/in):40/15.7-48/18.9Size:LWidth(cm/in):2.5/1Length(cm/in):45/17.7-52/20.5Size:XLWidth(cm/in):2.5/1Length(cm/in):52/20.5-60/23.6