Model HSY-168 Quantity 1 Color Black Bluetooth Version Bluetooth v2.1 + EDR Operating Range 10 meter Compatibility Compatible with Bluetooth v2.0 Microphone Yes Channels 2.1 Total Power 3W Impedance 4ohm Signal to Noise Ratio(SNR) 85dB Sensitivity 80dB Power Supply Built-in Battery Built-in Battery Capacity 3.7V / 1200mAh Compatible With Devices with Bluetooth function Other Features Interface: 3.5mm jack / micro USB; Audio prompts in operation process; Calls coming with broadcasting; Lack of power reminder function; Headset answering function; Hands-free answering phone calls function. Packing List 1 x Bluetooth speaker 1 x USB charging cable (43cm) 1 x English user manual