Speaker for iPod

Features:
1) Portable size, easy to carry 
2) High quality stereo sound
3) Cosmetically designed to match the IPod, it will also work 
    with any portable CD and MP3 player 
4) It can be powered either through AC adaptors or batteries 
5) Dimensions: 19.0 x 8.8 x 4.5cm
6) Weight: 240g

Specification:
1) Power supply: DC 6.0V (4 x AAA batteries) or AC adaptor (6V, 1A)
2) Output power: 2.1 x 2W
3) Frequency: 100Hz ýC 20kHz
4) S/N: 85dB 
5) Material: ABS