It can be put in bedroom, child room, living room, bar, shop, cafe, restaurant etc as decorative light. Coming with USB power adapter, you can connecting it to your home power socket or computer USB port. 7 Colours change: Red, Green, Blue, Yellow, Cyan, , White Automatically color changing mode. Press the touch button to last color, then press it again, auto color changing mode works Press one time, one color light up, press it again, it turns off. Press it thirdly, another color light up