Features:
1) Fashionable appearance with graceful sound
2) Used with MP3, MP4, PDA, IPOD, PC, portable CD / VCD and notebook
computer
3) Frequency response: 20Hz - 18kHz
4) Signal noise ration (S/N): >60dB
5) Distortion: <1%
6) Output power: 1W x 2
7) Power supply:
a) "AA" size battery x 4
b) AC adaptor: DC 4.5 - 6V 500mA (Not included)
c) Connect USB wire to PC or notebook computer: DC 5V (Not included)