Material: ABS + PS, with USB cable; 3 x AA batteries, not included. Pegging is designed at the bottom, can put the product hang on the wall. Function: after link USB cable, or after install batteries, press the product side of the switch for the rotating projection function; Open the music at the bottom of the switch, the product rotation - projection - music started at the same time, this product projection switch and music switch are separate, can open the projection function alone, also can open the music function independently.