Feature:Materials: plastic, copper wire.Voltage: 4.5 V.Power supply: 3xAAA battery(self provided).The use of waterproof lamp beads, cold light source, high lighting brightness, longer service life.There's a battery case behind the sucker, and the slide switch lights up.Notes:The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightnessPlease allow slight manual measurement deviation for the data.Package Content:1xSuction cup lamp