Model AN-M8 Type Mini Colors Black + red + golden Quantity 1 Material Plastic Internal Memory No Memory Card Type TF card / USB flash disk Max Extended Capacity 16GB Media Format MP3 / MP4 Total Power 2W Impedance 4 ohm Signal to Noise Ratio(SNR) 87dB Sensitivity 90dB Channels 2 Interface 1 x USB 2.0 / 1 x TF card slot / 1 x 3.5mm jack Radio FM Radio FM Frequency 87.5~108MHz Power Supply Built-in Rechargeable Battery Built-in Battery 600mAh Other Features 2 blue LED light Packing List 1 x Speaker 1 x Battery 1 x USB cable (62cm) 1 x 3.5mm audio male to male cable (60cm) 1 x English user manual