This silicon star lamp gives you dim light, tap it again to change bright light, and tap it again to change light with five colors. It has a three stage lighting mode (dim light, bright and colorful). It can change shining colors once being tapped. It can give out light in five colors (Red, Yellow, Green, Blue, and Pink). Being tapped eighth, it will gradually change shining colors. Being tapped ninth, it will be turned off. Just connect one end of a USB line to a computer or an adapter and the other to the input interface of the lamp. Once the lamp is in an undercharging state, it will light up automatically and go off when it is fully charged.