USB speakers, SD speakers, mini speakers, 2.0 speakers, 2.1 speakers, speakers
Specification: 
Input Power:---------------------------------------------------USB port OR 3.7V/1000mA
Input sources:------------------------------------------------3.5mm Stereo/USB/SD/FM
Power Output:-------------------------------------------------RMS 3Wx2
Speaker Driver: ----------------------------------------------2 inch 4ohm
Frequency Response: -------------------------------------45Hz-18KHz
Carton dimensions:-----------------------------------------463*370*535mm
Carton Packing:----------------------------------------------9pcs/CTN
N.W.: ------------------------------------------------------------8.5KGS
G.W.: ------------------------------------------------------------9.5KGS
USB speakers, SD speakers, mini speakers, 2.0 speakers, 2.1 speakers, speakers