2.1 Audio speaker 1. USB/SD WMA,PM3,MP4/5 Format. 2.Digital FM radio. 3. Key button with remote 4, 3*2030 IC,RMS:30W+10W*2 Hot Selling USB/ SD 2.1CH audio speaker systemFeatures:1,USB/SD card support mp3/4/5 format, can add wma format 2, FM, Karaoke function for option by you.3,LED & VFD display screen4,Connect with TV directly, or any other device of the audio frequency with output. 5, Key ...