Portable color box, a box of 12 The Ferris wheel uses 3 AA batteries and 12 pieces of music (not including battery) Dream sitting light uses 3 1.5V "AG10" (1 per box) Multi-angle spotlights use 3 1.5V "AG10" (1 per box) Use 3 1.5V "AG3" for the third gear card light (1 per box) The colorful ball uses 1 3V "CR1220" (4 tablets per box) The button battery is built-in and cannot be replaced