Fully Content with Bluetooth 4.0 Specification with 24-bit CRC Verify & Adaptive Frequency Hopping(AFH) Enabled High Sensitivity CSR8510 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) * AVRCP&A2DP Enabled allow to Play Music on the Speaker or Headset of Computer from Cell Phone，Tablet PC and more with Windows 8 or included Broadcom® drivers * Upgrades Bluetooth® support for Windows XP,2003,Vista,7,2008 and Windows 8 (Both 32Bit and 64Bit) and Mac Extremely compact USB adapter. Safe to leave in for laptop travel. Low power.