... monitor or projector in the market.Highlight:1 Support multi-touch,4 points, 16 points, 32 points and ... design, Super thin design 4 Adapt to a wide range of size (27-180 inches) 5 Fully compatible ... with windows XP OS, windows 7/8 OS multi-touch system Specification: Available Sizes: 27",42", 55", ... and overlay straps.Application: Infrared 64 points multi-touch 42" touch screen touch frame