Features:

1) Digital amplifier technology 

2) Neodymium drivers 29mm x 2 

3) Pre-installed iPod docking station 

4) 3.5mm stereo jack (for secondary input) 

5) Power output: 2W x 2 

6) Equivalent analog power output: 5W 

7) DC 5.0V adapter or 'AAA' x 4 batteries

8) Power on / off switch and volume control 

9) Weight: 340g (without batteries) 

10) Also available for MP3 Mobile phones