1.Bluetooth V4.0 class2 (also compliant Bluetooth 2.1+EDR) 2.OS supported :windows 7, vista , ... for distances to 10M. KeFeatures:Bluetooth V4.0 class2 (also compliant Bluetooth 2.1+EDR)OS supported :windows 7, vista ,xpPlug ... A2DP AVTCP, FTP, OPP, Audio-GW, FAX, BPP and tec.RoHS compliant BQB, CE, CE and FCC Applications:PC notebooks, netbooks and ...