... .0 class2 (also compliant Bluetooth 2.1+EDR) 2.OS supported :windows 7, vista ,xp 3. ... 10M. KeFeatures:Bluetooth V4.0 class2 (also compliant Bluetooth 2.1+EDR)OS supported :windows 7, vista ,xpPlug and playDual ... rate belt, Find me, Proximity, Generic Attribute Profile Bluetooth 2.1+EDR Support A2DP, AVRCP, DUN-GW, HSP, HFP A2DP ... top boxes General Specification: Dual-mode dongle bluetooth 4.0 plus 2.1