4-in-1 function， support plays music from USB Drive/SD card， and line-in audio input
Play MP3 format music from SD/MMC card， u disk and card reader
No need to shift between card reader/SD/MMC card， speaker automatically reads the memory plug in
Support remote control and panel control and LED display
Stereo sound and support select audio QC

Details:
Color LED: 12PCS
Speaker system: 4Ohms 2W
S/N ratio: >65dB
Power supply: Li-Hi battery 3.7V