Color Army Green Material 7220S Quantity 1 Piece Shade Of Color Green Bluetooth Handsfree Yes Bluetooth Version V4.0 Operating Range 10m Total Power 6 W Channels 2.0 Interface 3.5mmUSB 2.0 Microphone Yes SNR 85dB Sensitivity 800mv Frequency Response 40Hz~19KHz Impedance 4 ohm Applicable Products Universal Radio Tuner No Max Extended Capacity N/A Built-in Battery Capacity 7000 mAh Battery Type Li-polymer battery Talk Time 25 Hour Standby Time 250 Hour Music Play Time 30 Hour Plug Specifications USB Packing List 1 x Bluetooth speaker 1 x Audio cable (30cm) 1 x Charging cable(80cm)