It’s designed for travelers ,easy take ,easy use , and it’s beautiful.
Parameters for speaker:
1) Output power: RMS 4W (2W+2W), THD=10%
2) Frequency respond: 150-18,000Hz (± 3dB)
3) Signal to noise ratio: ?80dB
4) Power source input: DC 9V/1,000mA
5) Speaker size: 18 x 4.7 x 4.8cm
Functions:
1) Metal shell
2) Several ways to supply power for speaker:
a) 4 AAA batteries
b) USB [...]