Wireless Bluetooth 100m USB 2.0 Dongle Adapter Features: Compact and tiny Plug and play， no driver needed Compatible With Windows 98， 98SE， ME， 2000， XP， VISTA， Win 7. Connect to Bluetooth devices such as mobile phones ， PDA or PC ，for data transfer， networking， and dial-up ， fax etc Specification: Bluetooth Version: 2.0 Supports USB versions: 2.0， 1.1， and 1.0 Secure Transmission Level: 128-bit encryption Connection Speed: 3 Mbps Power Saving: Class 1 Device Dimensions: 52x19x9mm Pairing and Transfer Range: 100 meters (reality around 10 ~ 20m in open space， the maximum operating range depends on the environments factors.) Package: 1 x Wireless Bluetooth 100m USB 2.0 Dongle Adapter