... with easy operation Good sound quality RoHS, CE, FCC Recordable music chips with light sensor, available for children's gifts and ... capacity button cells, long life time.Main components:PCB, Speaker, IC, Microphone, push button or pull-tab switch, back sticker, wires ... , AG10 battery, etc.Can be made with customized music as background sound, any design is available. OEM/ODM orders ...