Charge your wireless charging enabled phone or listen to music via the compact Bluetooth speaker, or both at the same time if you like. The speaker can be charged and then used without a cable, but to use the wireless charger, it will need to be connected to a USB power source. 6.4 ( h ) x 7 ( dia ) ABS & aluminium supports playback from smartphones, tablets or most other Bluetooth compatible audio devices internal, rechargeable lithium polymer battery recharges via USB cable ( included ) to use the wireless charging function, the device being charged must be wireless charging compatible