Brand N/A Model F18 Type Portable Colors Red + black + silver Quantity 1 Material ABS Internal Memory No Memory Card Type TF / SD Card Max Extended Capacity 32GB Media Format MP3 Channels 2 Interface 1 x USB 2.0 port 1 x TF card slot 1 x SD card slot 1 x Mini USB port 1 x 3.5mm headset jack 1 x 3.5mm AUX Radio FM Radio FM Frequency 88~108MHz Power Supply External Rechargeable Battery Total Power 3W Impedance 4ohm +/-15% Signal to Noise Ratio(SNR) >=90dB +/-3dB Built-in Battery 3.2Whr Other Features With telescopic antenna ideal for old people as a FM radio player. Packing List 1 x MP3 player speaker 1 x BL-5C battery 1 x Mini USB to USB cable (49cm) 1 x Strap (16cm)