W10.5 CM<br> Capacity: 5V<br> Heating technology: thin micro carbon fiber heater panel <br> <br> <B>Washing method: </B>hand washing / washing machine washing / dry washing. Keep it clean indefinitely (Note: Please dry it after washing, please do not use it when there is water or wet.) <br> <br> <B>how to use:</B><B><br> </B>1. Insert DC into the eye mask.<br> 2. Connect the USB to the 5V power supply. (It can supply power from 5V USB such as power bank, PC, car, USB adapter, etc) </p