I only tested it once. For safety, the batteries will be removed before shipping. Planetarium Projector Light with Speaker, Timer Function, Main Unit & Remote Control Operation, Bedside Lamp, Sleep Aid, Bluetooth & USB Memory Music Playback, Music Mode, Sea Surface Projection Light, Starry Sky Star Light, Healing Goods, Constellation Projection Lamp, Indoor Interior Light, Galaxy Light, Gift, Birthday, Type-C, Japanese Instruction Manual *Also listed on other flea market sites, so we will prioritize the one that sells first.