Wireless Technologies USB Bluetooth Dongle Ultra-compact design can be left on PC, Laptop, Notebook and Handheld PC all the time, no need to Plug and un-plug anymore Compliant with Bluetooth spec.V2.0, 100 meter(330 feet) working distance Friendly user interface, software allows seamless integration with Windows Synchronize data between your cell phone and PC, and keep your mobile phone's address book up to date Wirelessly connects to other Bluetooth devices such as PDAs, printers, headsets, computers, mice, keyboards, and more