This is a great tool for PowerPoint presentations. With it you don't need to stand beside your computer or have an additional person click the slide for you. Plug and Play、 no need driver.Features:1. Remote controllerThe remote controller allows you to remotely move POWERPOINT frames forward or backward.2. RF & IR TransmissionPointer use RF signal to control POWERPOINT frame. Effective operating range: RF Transmission is 20 meters and IR Transmission is 15 meters.3. Use of USB portPointer uses standard USB port and works with IBM PC keyboard or mouse can be used while using Pointer.4. Laser pointerPointer is equipped with high quality laser pointer. Specification:Remote Controller: Range of Operation: 100ft Buttons: 3 Product Size: 11.9x2.0x1.50cm Battery: 1 x 1.5V AAA battery (Not Included!) Laser: Class II Size: 13.5cm x 2cm x 1cm Color: Black.Receiver: OS: Windows XP/Vista/7、 Linux & Mac Systems: PC/AT Interface: USB Spec 1.1、 HID Spec2.0 Size: 7cm x 2cm x 0.5cm