The Amazing Rainbow Projector in My Room Led Lamp Light Note: Please kindly ignore the "Estimated Delivery Date" above, packages usually take 7-14 days for delivery with tracking number, thank you for your support. The rainbow wave shape can be changed with switch on projector, Fashion design, beautiful and saving space 5-LED projector awesome device projecting waves of rainbow ,You can project a beautiful rainbow across your walls and ceiling in your room Power saving design, light will turn off automatically after 10 minutes,touch the button,it will light up again Battery supply power, use any time and anywhere, 2 modes: turns rainbow on at once, turns rainbow on one color after another, Optional auto power off timer, saving energy, Power Supply: 4 x AAA batteries (NOT Included)