Mini bluetooth dongle, smaller than 1 yuan coin, the length is 18mm only. Different colors are available. 1. Insert and play, no need to connect the power, supporting all kinds of bluetooth phones, strong Compatibility, can transmit any file easily. 2. Intuitive software operation interface, no complex settings. 3. Apply to Windows 98SE/ME/2000/XP/vistar or Mac OS X 10.2.6 and other operation systerm, no Need to drive under WindowsXP SP2, easy to take along. 4. With access to Internet via wireless dial ( bluetooth phone devices needed) 5. Bluetooth wireless LAN, can help 8 pieces of computers build a small wireless network, also can use This function to surf through bluetooth wireless base platform, or via the computer which inserted Bluetooth dongle ( the connected base platform and the computer have to be connected to Internet ). 6. Supporting bluetooth wireless fax ( the computer need to install fax software ). 7. Supporting bluetooth wireless file transmit. 8. Supporting bluetooth wireless data synchronization. 9. Supporting bluetooth virtual serial port. 10. Supporting bluetooth wireless print. 11. Supporting bluetooth headset. 12. Supporting bluetooth user interface ( bluetooth mouse and bluetoot keyboard ). 13. Supporting bluetooth headset with access to the music on computer or chatting through MSN/QQ/SKYPE. 14. Own audio gateway. 1. CSR case, compatiable with bluetooth v1.2, v2.0+DER, v2.1+EDR version, compatible with USB V1.1, v2.0. 2. Operation freguency band: From 2.4GHz to 2.483GHz, using FHSS technology ( hopping fequency And widening frequency ). 3. The operation range can reach 30 meters under open space. 4. Sensitivity: < -85 dBM. 5. USB interface, data transmit rate can reach 0.725M ---2.1bps, fast- speed and stable, high Security, 128 encryption, with pairing password authentication. 6. With an extra English plastic package, a piece of installing CD.