
1. Bluetooth standard V2.0 + EDR.2.Bluetooth CLASS 2.3. USB interface: USB2.0 standard, backward compatible with standard 1.0/1.1.4.Operating in the 2.4GHz to 2.483GHz frequency band between the use of FHSS (Frequency Hopping Spread Spectrum) technology.5. Open space under the operating range is about 30 m.6.Intuitive software user interface, without complicated settings.7. For Windows 98SE/ME/2000/XP/2003/VISTA or Mac OS X 10.2.6 or above operating system.8.Under the WindowsXP SP2/VISTA time to drive, easy to carry!9.Data transfer rate up to 3Mbps Features* Sensitivity <-85 dBM...web address is: http://www.esmart.net/7/post/2011/07/usb-bluetooth-adapter-wireless-bluetooth-dongle.html