Type: Inalambrico. Dimensions: mm. Weight: 250 g. Nominal output power: (RMS) 3W. Removable cell battery of lithium ions, 600mAh. Connection buttons, Mode, Lower volume/Previous Track, Upload volume/Next Track and answer/ Cut/Pause/Reduce. Type of charger connector: 5V USB Micro. Volume control: Yes. Signal/ruid ratio >85dB. Bluetooth connectivity interface, 3.5mm and micro SD. Inalambrico connectivity technology, Cableado.