Brand SANSUI Model A46 Type Portable Colors Red + black Quantity 1 Material Aluminum alloy Internal Memory No Memory Card Type TF card / USB flash drive Max Extended Capacity 16GB (TF card) / 32GB (USB flash drive) Media Format MP3 / WMA / WAV Total Power 2.3W x 2 Signal to Noise Ratio(SNR) 60~70dB Channels 2 Remote Type N/A Interface 1 x Mini USB port 1 x USB port 1 x AUX 1 x 3.5mm audio jack 1 x TF card slot Radio FM Radio FM Frequency 87.5~108MHz Power Supply Built-in Rechargeable Battery Built-in Battery 600mAh lithium battery Plug Type USB powered Other Features 3.0 inch LED display screen; External large angles rotational retractable FM radio antenna; High capacity Li-ion battery for playing long time (5 hours); Multiple time periods alarm clock setting support alarm clock after shutdown; Alarm tone selectable from your favorite songs. Packing List 1 x Speaker 1 x USB data cable (75cm) 1 x 3.5mm to 3.5mm connection cable (110cm) 1 x Chinese user manual