about item:<br />this is rain resistant and wear resistant nylon led light flashing pet dog safety collar，<br />ideal for walking at night and having fun.shinning in the dark makes your lovely pet unique，<br />it is also an excellent way to ensure both you and your pet's safety.<br /><br />details:<br />item condition: 100% <br />item material: led electronics + abs +nylon + tpu (thermoplastic polyurethanes)<br /><br />color: item color: red， green， blue， yellow， orange， pink， white， rgb<br />light color: red， green， blue， yellow， orange， pink， white， rgb<br />led power source: 2*cr2032 button cell(installed)<br />led flash 3 modes: constant on，strobe，flashing<br />battery life: approx 60 hours，normal 2-3 months of use; battery can be replaced<br /><br />item size<br />s<br />length: 30~40cm/11.81~15.75 inch adjustable<br />width: 2.5cm/0.98 inch<br />m<br />length: 38~50cm/14.96~19.69 inch adjustable<br />width: 2.5cm/0.98 inch<br />l<br />length: 48~60cm/18.90~23.62 inch adjustable<br />width: 2.5cm/0.98 inch<br /><br />features:<br />* 100%  and high quality<br />* 3 size available， length adjustable for each size<br />* made of high transparent tpu optic fiber， lighting evenly and mildly<br />* 3 lighting modes: constant on， strobe and flashing(with switch to select)<br />* comfortable to wear， it will not hurt your pet<br />* with buckle， easy and convenient to wear and remove<br />* led powered by 2pcs cr2032 cell button(installed)<br />* rain resistant，washable and durable<br /><br />tips: before your order，please confirm that this size fits for your dog's neck(it is very important).<br /><br />package include:<br />1x led pet dog collar<br />2x cr2032 battery (installed)