Product DescriptionTerrific light and flat Easier intervention and data transfer Wireless connection with aerial Supplementary standard Bluetooth 1.1 and 1.2 Range of transmission: Up to 100 meter! (Bluetooth class 1) Frequency volumn: 2.4 GHz~2.4835GHz Max. Of transmission rate: 723kbps Plug & Play, support Windows 98/ 98SE/ ME/ 2000/ XP FunkLAN standard: IEEE 802.15 Bluetooth 128bit encryption No additional battery needed