... easy operation Good sound quality RoHS, CE, FCC, EN-71 Mini waterproof music chip with customized design, available for children's ... components:PCB, Speaker, IC, Microphone, AG10 battery, back sticker, wires, push button or pull-tab switch, etc.Can be made with customized ... , any design is available. OEM/ODM orders are warmly welcome! Mini waterproof music chip