***** **********Best Quality Guranteed. *****Plug & Play (no software needed) / Range up to 49 feet ( 2.4GH z universal channel )*****Works on both Mac and PC, (Windows 2000 or later Versions). Supports MS Word, Excel, PowerPoint, iWork Keynote etc; (MacBook, plug the usb receiver, select 101 or104 from install Popup. )*****The USB receiver can be hide inside the Remote to carry around*****In the package: 1.2. 4GHz Laser Presenter Remote 2. USB receiver 3. 1 x AAABattery