Brand N/A Model C1XF Type Mini Colors White + red Quantity 1 Internal Memory 0 Memory Card Type TF Max Extended Capacity 8GB / 16GB (USB flash drive) Media Format MP3 Total Power 3W Signal to Noise Ratio(SNR) 85dB Channels 2 Interface 1 x TF card slot 1 x USB 2.0 port 1 x 3.5mm jack 1 x 3.5mm Aux Radio FM Radio FM Frequency 76~108MHz Power Supply Built-in Rechargeable Battery Built-in Battery External battery: 800mAh Other Features Widely used suitable for home and outdoor sports; Can listening to music and receiving FM radio; Built-in Hi-Fi speaker loud sound; Powered by USB or li-ion battery; With charging indicator; Small and portable; Can connect to laptops MP3 / Mp4 and cellphone etc.; Built-in antenna Packing List 1 x Speaker 1 x Audio cable (111cm) 1 x USB to 3.5mm charging cable (104cm) 1 x Strap (16cm) 1 x Chinese / English user manual 1 x BL-5C battery