This star master can use 3 AA batteries or USB power supply;Please do not use the power supply and the battery at the same time press the star button, and the transparent hemisphere will rotate automatically; Press the LED button, and then choose the displayed color.Makes a great night light, with the moon and stars projected all around the room and Creating the most romantic atmosphere with The Amazing Desktop Toy Fun Dimensional Tabletop Toy Rolling Fidget Stick, A fun Japanese desktop game that challenges your creativity You can flip, roll and do tricks with it, giving you endless possibilities of fun, buy it and create your unique playing ways Perfect for Hand-Eye Coordination concentration Trainer, suitable for one or more person to play