Features: Brand new and high quality. Bluetooth low energy radio usb dongle. Dual-mode bluetooth transfer. Low-power selectable 1.2 to 3.6 VI/O. Supporting bluetooth voice data. Supporting Multi languages. WLAN coexistence interface. Plug and play. Bluetooth specification V4.0 compliant. Supporting profiles: networking， dial-up， fax， LAN access， and headset. Operation system: windows98， 98se， Me， 2000， xp， vista， windows7. Interface: USB compliance. Symbol rate: 3Mbps. Receiving/Sending range: 20m. Package Included:1 x USB Bluetooth V4.0 Adapter