Teach children to be aware of lighting. this desk lamp makes you realize that energy costs money. the lamp only switches on when you put a medium or large coin in it. to switch off the lamp, pull the wooden button. the usb connection comes in handy if you have the lamp on your desk and need some extra light while working or studying.features - 2-in-1 lamp- ideal for energy savings- with usb connection- very suitable as a desk lampproduct information- product: designnest coinlamp dina - desk lamp and money box - 24x12.5x27- material: wood, plastic- dimensions: l 24 x w 12.5 x h 27 cm- weight: 770 grams- colour: black, white- packaging: gift packaging- packaging dimensions: l 28 x w 17 x h 31 cm- packaging weight: 1150 grams- brand: designnest