Bluetooth Portable Subwoofer Waterproof Sound Box Speaker Color:Black built-in smart IC technology automatically

built-in smart IC technology automatically delivers the optimal charging currents to the connected device

answer calls and turn on voice assistant seamlessly

*Battery: 550mAh Built-in

If you are not satisfied with the product

Playing time:20 H(LED closed)

Bluetooth Portable Subwoofer Waterproof Sound Box Speaker Color:Black built-in smart IC technology automaticallyThis 360 degrees bluetooth portable subwoofer waterproof speaker is compatible with iPhone, Android phones and iPads, TF cards and USB drive. One phone can be paired with 2 speakers at the same time to creat the true 3D stereo sound. With the 52mm build in speakers, it gives you a crystal clear sound quality with deep base. On top of it, it builds in with a microphone, still can answer the phone calls while you are playing your music, it's the perfect