shape with the advanced features that mobile warriors require. It's easy to pack it up and take it anywhere. When you're ready to use it, just pop the sleek USB receiver into your notebook and start pointing, clicking, and scrolling. Features: *Ergonomic and fancy design for comfortable operation *Easy to set up, Plug & Play in Win 2000 system or above) *Encrypted wireless technology (256 ID codes) avoids interference for completely reliable performance Technical data: *Channel: single *Working distance: 1.5 meters in normal environment *Radio Frequency: 27MHz *Interface: USB mini receiver *Battery life: three months *System requirement: compatible with Windows 98 NT/2000/ME/XP