1. This powerpoint presenter allows you to control slides from up to 100 feet .2. With the functions of page up, page down, full-screen, switch , and hyperlinks.3. The 656ft long range red pointer makes people easy to find the key .4. With the USB receiver, you have no need to download software.5. It is easy to in pockets and easy to carry anywhere.6. Compatible with various , as as different presentation programs.2 x AAA batteries (not included)Colour:BlackMaterial:ABSPackage Contents:1 x Presentation clickerOnly the above package content, other are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.