Model F-2 Quantity 1 Color Black + Silver Bluetooth Version v2.1 Operating Range 5~8 meter Compatibility Compatible with all stereo Bluetooth device Microphone Yes Channels 2 Impedance 4ohm Signal to Noise Ratio(SNR) 85dB Sensitivity 30~20K Radio FM Radio (87.5~108MHz) Supports Music Format MP3 Power Supply Built-in Battery Built-in Battery Capacity 1000mAh (Actual 500mAh) Other Features 1.4" screen display support SD card up to 16GB; Comes with a remote controller which is powered by 1 x CR2025 battery (Included). Packing List 1 x Speaker 1 x Remote controller 1 x Battery 1 x USB cable (40cm) 1 x 3.5 male to male audio cable (71cm)