Main functions: 1) Laser pointer function 2) Page up / down function Features: 1) No driver required 2) System: Windows 98 / 2000 / ME / XP Linux and Mac OS infrared technology 3) Control distance: up to 15m 4) Working voltage: 3V 5) Sleep current: 1uA 6) Wavelength: 650nm 7) Max. output: 8) Battery: 3 x LR44 (button cell)