Output channels: 2 channels 

Can use with Mobiles,Mp3 Players, Ipods with 3.5mm jack

Rated power:  (3 W x 2) 
Impedance: 4 Ω 
Frequency response: 150 Hz ~ 18 KHz 
PC Connection: 3.5 mm (stereo) 
With Volume Control 
Power: USB 
Package Size: 13.5x6x14.3cm