Optional silver aluminum space frame or environmental plastic materials Mask using the latest nano-technology manufacturing stearyl of high wear-resistant coatings aggrandize Yaguang dedicated writing film projection, anti-scratch, high-definition, easy to clean (can use white board cleaner or damp cloth to clean), completely eliminate the projection light shadow, good lubricity Writing, anti-chemical erosion; Backplane using high-quality aluminum honeycomb plate manufacture, not easy to deformation and stretching, anti-hit, the service life of up to 10 years; communications using 10-meter line and the computer connected to USB, no external power, plug-and-play; Product easy to install, can be wall, push and pull, lift the track can be installed, such as take-off and landing stent fixed or mobile use. Simple and practical software that will learn. Customers can support both matching projection is supported by the surface of ordinary Kandelia writing materials; 25 meters optional USB line. 88 inch 183*128*4(Product appearance (cm)) 1575*1115mm(Effective Writing area(mm)) Principle:Wireless Electromagnetic Induction Aspect ratio:4:3 Wall mounting brackets