Version V4.0 USB Bluetooth Dongle Wireless Adapter EDR for Pc Windows 7 Vista Xp Fully Content with Bluetooth 4.0 Specification with 24-bit CRC Verify & Adaptive Frequency Hopping(AFH) Enabled High Sensitivity CSR8510 A10 Controller Premium CSR Harmony Application included allow Microsoft Office and other Applications Access Bluetooth Connection Directly Advanced Audio Processing Enabled allow a Lossless Audio and DATA Delivery up to 3Mbps and 100M (Peer to Peer) VRCP & A2DP Enabled allow to Play Music on the Speaker or Headset of Computer from Cell PhoneTablet PC and any Bluetooth Enabled Devices Micro Bluetooth Adapter allow to Plug and Forget,Compatible with Windows XP,2003,Vista,7,2008 and Windows 8 (Both 32Bit and 64Bit) and Mac