Model MKBSN8-002 Quantity 1 Color Silver + Black Bluetooth Version v3.0 Operating Range 10 meter Compatibility Mobile phone tablet PC and other devices with Bluetooth function. Microphone Yes Channels 2.1 Total Power 3W Impedance 4ohm Signal to Noise Ratio(SNR) >=90dB Sensitivity 82dBm Radio N/A Supports Music Format N/A Power Supply Built-in Battery Built-in Battery Capacity 500mAh Other Features Support hands-free and headset function; Supports TF card up to 8GB; Data transmission: 3Mbps; UART data transmission: 115200bps; Frequency: 2.402~2.482GHz. Certification CE Packing List 1 x Mini Bluetooth speaker 1 x English user manual 1 x USB cable (66cm) 1 x 3.5mm male to male cable (90cm)