Specifications:
1) Voltage supply: 4.8 - 6V
2) Power adapter: AC 100 - 240V/50Hz/60Hz, DC 6V/1A
3) Battery: 4 x AA (1.5V) alkaline batteries, or 4 x AA (1.25V) chargeable batteries
4) Input: 0 - 0.8V
5) Output power: 2 x 2.0W
6) S/N ration: 85dB
7) Frequency response: 110Hz - 20kHz
8) Dimensions:
a) Unfolding (L x H): 285 x 80mm
b) Folding (L x H x T): 130 x 80 x 43mm