Brand Carrey Model FS-403 Type Mini Colors Red + White + Black Quantity 1 Internal Memory No Memory Card Type SD / TF Max Extended Capacity 16GB Media Format Supports playing audio files on SD / TF card Total Power 3~5W Impedance 8ohm Signal to Noise Ratio(SNR) >80dB Sensitivity 80dB + / - 2dB Channels 2 Interface 1 x 3.5mm jack 1 x TF card slot 1 x USB 2.0 port 1 x Mini USB Radio FM Radio FM Frequency 78~108MHz Power Supply Built-in rechargeable battery Built-in Battery 550mAh Other Features 0.8" screen display; With one LED emitting red green or blue color light; Insert the TF card / USB the unit automatically detects the source and plays audia files Packing List 1 x Speaker 1 x USB charging cable(71cm) 1 x 3.5mm plug audio cable (77cm) 1 x Battery