[Superior Sound Quality]: The portable Bluetooth speaker is equipped with two powerful 10W speakers and two external passive radiators for powerful bass and crystal clear treble. Built-in noise-canceling microphone for clearer calls. [Bluetooth 5.0 Versatility]: The Bluetooth 5.0 speaker is compatible with all Bluetooth devices and provides stable connectivity up to 15 meters away. The built-in 3.5mm AUX jack and TF/USB provide an alternative way to connect devices without resorting to Bluetooth, and FM mode lets you listen to the radio. The Bluetooth speaker will automatically and quickly connect to the last device used. Large Capacity Battery: The portable speaker is powered by a 2800mAh Li-ion battery that can hold up to 16 hours of music or talk time and can be recharged in just 3-4 hours. Suitable for beach, party, car, bathroom, dorm and many more indoor and outdoor activities. Waterproof; Technology: The waterproof Bluetooth speaker is covered with a waterproof, drop-resistant and durable silicone material, providing a high level of waterproof, equipped with a portable cord. Form a powerful wireless stereo system by combining two Bluetooth speakers for true stereo sound (enhanced dual stereo sound).