USB Rechargeable The puck light can be charged by any USB port,like plug,power bank or laptop.Energy saving and save more money! Note: 1.Please charge the product before the first-use.Charge for 2-3 hours (Red light is charging state, Light off is full state). 2.Remove the plastic spacer before using the remote control. 3.Before using the adhesives, please wipe the area where you need to paste it to avoid dust, water, etc., otherwise the bonding strength will be affected. 4.Don't charge for a long time (prohibit more than 12 hours), Excessive charging time will affect the battery life, prohibit using while charging all time. 5.Please place the products away from fire or high temperature place. Children should use this product under the guidance of adults. 6.Any problems please feel free to comminicate with us,we are striving to provide good products and a happy shopping experience for every customer, we will try our best to provide a satisfied solution! Package Included: 2 x Battery operated light bulb 2 x remote control 1 x instructions