1.High compatibility: directly applied in current teaching system, compatibility of the projector, 2.High stability: the world first-class image processing technology, make the products capture thehigh stability, 3.Using the avant-garde technology high: the digital processing technology, products with high technology level, 4.High precision, the advanced technology, make the products of infrared with excellent positioning accuracy, 5.Portable: the whole equipment shortage in weight one kilogram, except for the wireless transmission of power outside, can carry, 6.Convenient transportation: product cabinet, lightweight, convenient transportation, 7.Simple installation: using wireless transmission technology, but without redundant power cables, easy to install and effectiveness of beautiful, 8.Use simple: through simple Settings, 1 minute can easily manipulated, perfect finish the mouse operation, 9.Environmental requirements: the use of adverse environment, without using whiteboard, ensure that the use of high quality, 10.Low cost: highly compatible with existing teaching system, to avoid waste, low investment, equipment, 11.Maintenance costs low: high integration, high reliability and easy installation and use of the maintenance cost that cheap