Cinolink BT403 Certified Bluetooth 4.0 USB Adapter, Class 1, 50 Meter, APTX for Windows 8/7/Vista/XP Chipset: CSR BC8510 and Bluetooth 4.0 + EDR compliant Audio gateway on PC with Bluetooth headset for VoIP, MSN, skype, etc. Enhance data transfer rate up to 2m~3MBPS Share/edit/print documents via Bluetooth and synchronize info of mobile/PDA with PC Bluetooth certificate approved by amazon and FCC/CS/IC certified