... ; magnetic-proof,net card, sound card,integrated display card,2.SAW Touch screen:Screen size:15 ... ,dust proof,vandal-proof(optional) Resolution: 4,096 x 4,096 pixels.Deviation of error: <2mmLight transmittance ... 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 ...