USB Powered Speakers
U Smart (USB Powered) Contains the following features:
U-Smart speakers is supported with high frequency between 120Hz ~ 20 KHz for the high response
Its drive unite is about 2” x 2
Impedance is about 4 Ohms,
Distortion is about 0.3% 1W1KHz,
Power input is 5V/1A USB supported, means it will consume less electricity and produce high quality sound.