The document introduces the features and characteristics of an MP3 player, including support for multiple audio formats, high-speed USB2.0 interface, and FM radio playback.
SF-22L is a MP3 player from SenFeng,supports MP3,WAV,WMA format files playback,supports USB2.0 interface,supports A-B loop,EQ equalizer,recording,FM radio,battery capacity is 5mW,voltage is 2S,power consumption is 0.05%,weight is 11.2g,color is black
