*USB mini speaker
*Built-in amplifier with pure,vivid,distinct sound
*Compatible with laptop,iPod,MP3,MP4,MP5,cellphone,PSPSs and so on
*Power:3W X 2 Driver Unit:2-inch x 2 Impedance:4ohms
*Frequency:120Hz to 20kHz
*Power adapter:USB 5V DC
*Product Size:96*96*83cm
*Product weight:0.47kg
*Color is optional