Brand N/A Model S11 Quantity 1 Color Black Bluetooth Version V2.1 + EDR Class 2 3 Operating Range 10 meter Microphone Yes Channels 2 Total Power 6W Impedance 4 ohm Signal to Noise Ratio(SNR) >/=85dB Sensitivity Radio N/A Supports Music Format MP3 Power Supply Built-in Battery Built-in Battery Capacity 500mAh Compatible With PC Iphone MP4 etc.- BQB Certification Yes Other Features Frequency: 80Hz~20KHz; Connector: Mini USB / 3.5mm / TF card slot; Support TF card 32GB max Packing List 1 x Bluetooth speaker 1 x USB charging cable (103cm) 1 x Audio cable (84cm) 1 x Battery 1 x English user manual