Transmitter
functions: page up/down
program compatibility: microsoft office, notepad, internet pages
range: >15 meters
clip on back
laser
range: >200 meters
wavelength: 650nm class 2
max output: <1mw
receiver
system: windows 2000/me/xp/vista, mac os 8.6 +, linux plug and play.
Power source: transmitter- alkaline,12v batteries, receiver- usb bus-powered.