... .0 class2 (also compliant Bluetooth 2.1+EDR) 2.OS supported :windows 7, vista ,xp 3.Dual-mode Bluetooth fully qualified Bluetooth V4.0 ... delivers up to 3 Mbps data rate for distances to 10M. KeFeatures:Bluetooth V4.0 class2 (also compliant Bluetooth 2.1+EDR)OS ... Heart rate belt, Find me, Proximity, Generic Attribute Profile Bluetooth 2.1+EDR Support A2DP, AVRCP, DUN-GW, HSP, HFP A2DP AVTCP ...