... /ODM offer 4,:iso:9001:2008,rohs.fcca icti,gsv wonderful computer usb headset specification: headphone: headphone&headset , computer headphone, ... the strict implementation of the system of check and acceptance, so that stable and reliable product quality. use for:Headphone can ... main market: Europe,USA, ,Australia , Korea, japan,canada etc. wonderful computer usb headset wonderful computer usb headset