Product description: It is pen-style remote-control laser pointer that lets you go forward or reverse through your presentation. This device combines the functions of a laser pointer, scroll / page up / down for your successful presentations. Main functions: 1) Laser pointer function 2) Page up / down function Features: 1) USB plug-and-play, no driver required 2) System: Windows 98 / 2000 / ME / XP, Linux and Mac OS 3) Infrared technology 4) Control distance: up to 15m 5) Working voltage: 1.5V 6) Sleep current: 1uA 7) Wavelength: 650nm 8) Max. output: