(1) Host Dimensions : L 240-w 105-h 98 mm
(2) Carton measurements:  525-260-410 mm
(3)QTY/CTN:20
(4)Output Power: 3W x 2
(5)Speaker Size: 1.5"
(6)Impedance: 4Ω
(7)USB provide power, mini stereo system.
(8)High-efficience Class-D professional digital vedio amplifier.3D sound effect .
Adapt to different kinds of device, such as laptop ,, mp3,mp4,CD,mobile phone