... , School and so on.Touch Technology:1. Infrared Touch screen. With waterproof, Dustproof, Anti-riot, Vandal proof and other functions.2 ... . Size: 26'', 32'', 42'', 50'', 65'' for your selection. And with save energy function.3. Brand: Samsung, Sony, LG and so ... , moisture-proof, Anti-dust, Anti-acid, and Anti-Rust. With multimedia Stereo function.Service Life: More than 7 yearsWarranty: one year for ...