Red laser pointer , page up and down function battery 3pcAG13 infrared technology Model:IR-022R Specification: Feature: Red laser pointer , page up and down function.USB plug and play ,no drive required .Radio frequency technologyit support Word ,Excel,Powerpoint,ACDSee,Website,Acrobat Reader etcFor teching ,Meeting,Speech,Training etc.Operating system: Microsoft Windows 98, Se, Me, 2000, XP, Mac ...