Presenter mode, an integrated class 2 laser pointer, and touch keys that are easy to use for controlling slideshows; AA batteries are needed; Polaroid AA batteries work best. A bright red laser pointer Visible against most backgrounds Wireless range of up to 50 feet allows you to freely move around the room. 2.4 GHz RF wireless technology, receiver stored in the docking bay for convenient portability and packing No software needs to be installed: To get started, simply insert the receiver into a USB port: Additionally, you can store the receiver in the presenter after the show is over.