DROK Waterproof Bluetooth Shower Speakers Car Mic Wireless Bluetooth Triangle Portable Speaker fits Bathroom, Beach, Pool and Other Activities, Support iPhone iPad With suction cup to adhere to desktop or on the wall Level-4 waterproof/light/portable/rechargable bluetooth wireless stero speaker(please NOT immerse in water) With 400mA built-in lithium battery(No require external battery) and has USB port for charging Voice prompts function,support bluetooth devices like Iphone/Ipad etc Built-in microphone allows you to enjoy hand-free calling