SANOXY ® USB Wireless Remote Pointer Control PowerPoint Presentation presenter with Laser Pointer with Page up and down function. * Laser distance: Over 200m ; Control distance: Over 15m Remote powered by 1 x "AAA" Battery * Specs: Wavelength=650nm, Output=1mw * Easy to carry; The transmitter and receiver are integrated into one unit for easy carry! It is USB plug-and-play. No driver required. Just plug the receiver into the USB port on a PC and it works within seconds. * Effectively manage your presentation; Advanced radio frequency (RF) technology that works through walls and the controlling distance is up to 10-meters / 30-feet away, so you never have to stand at beside of your computer.