... 1.Multimedia Laser Pointer 2.red laser 3.page up and page down 4.Infared technology 5.Remote control laser ... Plug and play function, no PC programming and S/W;Working on any computer, on any computer using a ... to avoid multi-user interferences2 in 1: Laser pointer, Page up and down functionPackage dimension: 150*75*24mmPackage weight: ... Lecture Speech Powerpoint with Remote red laser page up page down