Stay hands-free, without compromising on hearing or being heard clearly. When all is said and done, turn up the volume and have a little fun with your favourite playlist. 17 ( l ) x 8 ( dia ) ABS & polyester includes printed gift box supports playback from smartphones, tablets or most other Bluetooth compatible audio devices TF card function non-integrated 3.5mm audio input cable ( included ) internal, rechargeable lithium-ion battery recharges via USB cable ( included ) built-in microphone supports call pick-up