To activate your LED Rechargeable Lounge Chair, first charge your chair with the A/C adapter provided. Once your LED Lounge Chair has charged for at least 6 hours, it is good to go. Use remote control to change its color, many single colors to choose from, plus a cool slow color change. LED Lounge Chair recharges night after night does not require batteries. Specifications: Dimensions (L x W x H): 23" x 22" x 19"