Specificaties: Interface: BT 5.0 Bluetooth frequency range: 2.402 GHz – 2.480 GHz RF transmit power: < 9 dBm Speaker: 45 mm RMS power output: 3 W Frequency response: 60Hz - 15KHz S/N ratio: >80 dB Distortion: THD= 0.5% DC input: MicroUSB 5 VDC up to 1 A Battery: rechargeable 500 mAh Li-Polymer