... Mini Digital Speaker Portable,2.0 USB Powered Speaker We produce kinds of mini speaker, portable speaker, usb speaker, 2.0 speaker, computer speaker, laptop speaker, mp3 speaker, multimedia digital speaker, etc. Parameters ... 5.Build-in audio line6.Power:Build-in USB cable (5V/1A)7.Plug:Stereo 3.5mm metal type,8.Volume control9 ...