2.1 Audio speaker 1. USB/SD WMA,PM3,MP4/5 Format. 2.Digital FM radio. 3. Key button with remote 4, 3 ... ,RMS:30W+10W*2 Hot Selling USB/ SD 2.1CH audio speaker systemFeatures:1,USB/SD card support mp3/4/5 ... ,Connect with TV directly, or any other device of the audio frequency with output. 5, Key button with remote control is ... /40ft,1462sets/40'HQ Hot Selling USB/ SD 2.1CH audio speaker system