Mini speaker audiospeakers:
1.FM radio function
2.Free of remote control
3.support SD/USB/FM
4.Can be charge directl

audio pro speakers description ,mini speaker

function

1.Material:Aluminum
2.Newmini aluminumvibration film loud speaker,which has clear and pure woof
3.Several power supply manners including battery,computer USB,adaptor DC-5.5V allow you to enjoy the charm of digital products at any time.
4.can be connected with MP3,MP4,CD,DVD,GPS,PSP,mobile phone, notebook computer. 

Parameters:

1.Output:3W*2              
2.Frequency Response:90HZ-20KHZ  
3.Loudspeaker specification :4Ω*3W, ,
4.Power supply:5V
5.S/N: ≥70db,
6.external li-ion battery:3.7V,800MA
7.Distortion:0.10%,at 1w
8.Separation: 45dB 

Accessories:

1.USB power supply cable
2.3.5mm-3.5mm stereo connect cable

Package:

1.packing:color box+carton box
2.Qty/Carton:50Pcs,
3.colorful box size:190*100*95MM
4.product size:173MM*52MM*52MM(L*W*H)