CR-930InternetphoneCEcertificate ROHSSpecification：3-in-1powerfulandsmartfunction(handfree,speaker,microphone)FreetalkingonPC-to-PCNodriverneededCompatibletostandardcomputerandmusicplayerdevices,includePC,MAC,notebookectSupports:MSN,Skype,YahooMessenger,ICQandQQPowerSources:DC3V(UM-4 2pcs)UnitDimension:103x43x16mmInspectionstandard：Generallytheacceptableinspectionstandard basedonAQL2.5/4.0,ifyouneedhigherinspectionstandard,firstweneedtocheckifwecanreachthisstandard,andthencheckthepriceBatterylifespan：Becausethebatteriesarenotinsidetheproduct,soyoucanchoosethebetterbatteriesbyyourself,andthelifespanofthegeneralbatteriesisabout1year