Bluetooth. Waterproof, floats and is submersible (IP68). Up to 1 hours of play time with continuous play time in full sunlight. Two W speakers. Built-in 1.W HD solar panel. Down-firing subwoofer. Solar power charges internal battery in 3 hours. ,800mAh rechargeable battery. USB charging port. LED meter to optimize sun angle. Universally charges phone, tablets, cameras and radios. Built-in 3.mm input. Universal screw mount. Powered by SunCore. Warranty: Three years.