... ; magnetic-proof,net card, sound card,integrated display card,2.SAW Touch screen:Screen size:15 ... of error: <2mmLight transmittance: ≥92%Surface hardness: 7 MoHs scaleLifetime: 50,000,000 times at one ... value between pricing and function.3.Grade A LCD display:Resolution: 1,920*1,080Screen size:15 ... ,17 19 20,22, inch Grade A LCD monitor,three year guranteed.Brightness: 300cd/m2Contrast ratio ...