Chipset CSR BC352239A Bluetooth V1.2 standards support the headset/hands free mode Power supplier 2-24V from the car It contains DSP technology, which can decrease the radiation to human body The output power 0.001W, 2.4G distance 10m Dimensions 360 x 300 x 270mm Net weight 66g Packing 10pcs/ctn G.W. 1.3kg