It is a great tool for power point presentation. It works as a laser pointer, an optical mouse, a PC remote and a multimedia keyboard. It comes with a USB extend cable and a USB receiver. Easily control the pace of your presentation, advanced radio frequency technology that works through walls and control distance up to 15 meters/ 50 feet away, so you never have stand at beside of your computer. Multifunctional presenter: It combines the functions of laser pointer, a optical mouse and keyboard hotkeys ect. Easy to use: 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. Save power design: The device will go to sleep mode after there is no any operation for 30 seconds. It will wake up when any key is pressed.