Specificaties: Interface: BT v.2.1 + EDR, Class II, Handsfree profile BT frequency range: 2.402 GHz – 2.480 GHz Speaker: 40 mm magnet-free, 4 Ohm RMS power output: 3 W Frequency response: 100Hz - 10KHz S/N ratio: 80 dB DC input: MicroUSB 5 VDC up to 1.5 A Battery: rechargeable 400 mAh Li-Polymer USB / audio cable length: 0.2 m Dimensions: D61 x H50 mm Net weight: 240 g