Kingson Super Bass Stereo Wireless Bluetooth Speaker with Build in Microphone Support Hands-free Call Function and USB Rechargeable for Apple IOS and Android Smart Phones Black Outstanding wireless connection range of up to 10 meters Supports Wireless Music via New Bluetooth v3.0 Technology A clear full-range sound and deep bass with amazing quality sound Don't have a Bluetooth enabled device? No worry, also included line in 3.5mm aux jack Built-in 1200mAh Li-ion Rechargeable Battery and built-in microphone for hands-free calls