About this item HD Stereo Extra Bass: The wireless bluetooth speaker equips with 30W high power full frequency drivers speaker and an advanced digital signal processor to ensure a high-fidelity sound system. Extra bass button to enhance the bass effect All Day on Battery Life: With a built-in 3600 mAh rechargeable lithium battery, the portable bluetooth speaker provides you for over 20 hours per charge(The battery life depends on Led light, volume, and music types). Built-in microphone for hands-free calls Bluetooth 5.3 and Wide Compatibility: The outdoor wireless speaker adopted advanced Bluetooth 5.3 technology. Providing fast, powerful and stable connection with wide compatibility. Easy to pair with most Bluetooth-enabled devices, such as Phones, MP3, TV, Laptop. Support sd card IPX7 Waterproof Bluetooth Speaker: It can be fully immersed in 1 meter of water for a short time for fearless outdoor entertainment. It is resistant to rain, dust, snow, mud, sand, and spills, no worries about the weather, a great bluetooth speaker for travel, home. Great choice for Christmas, birthday or fathers​/​mothers day gifts RGB Lights and Paring function: RGB light color changing with music. The stronger the sense of rhythm, the stronger the beating of the radiator. And pairing two Wireless bluetooth speakers simultaneously to truly enjoy the surround sound of a movie theater with the True Wireless Stereo function