Xiaomi Original Mi Bluetooth 4.1 Speaker 2, Black Supports Bluetooth 4.1 and can be used with mobile devices. Super connection range up to 10 meter in open area. Built-in microphone for hands-free calls, free your hands and keep your safety in driving. Comes with a 1200mAh battery which offers 7 hours of continuous playback. Measures 60.0mm x 60.0mm x 93.3mm and the maximum output power is 5W. Also has a small LED indicator at the front.