Type Mini Colors White + black Quantity 1 Material Plastic Internal Memory No Memory Card Type TF Max Extended Capacity 16GB Media Format MP3 / WMA / WAV Total Power 2W Impedance 0.5ohm Signal to Noise Ratio(SNR) >=60db Channels 2 Remote Type N/A Interface 1 x Mini USB 1 x TF card slot 1 x USB 2.0 1 x 3.5mm earphones jack 1 x 3.5mm AUX Radio FM Radio FM Frequency 87~108MHz Power Supply Built-in rechargeable battery Built-in Battery 1200mAh Other Features With 20 LED emit white light power supply: DC 5V or powered by 3 x AA batteries charging times: 5~8 hours working times: 16~24 hours. Packing List 1 x Speaker 1 x USB charging cable (80cm) 1 x Audio cable (68cm)