... Transmission > 99.9% 2.Nice Adhesion, Bubbleless 3.Never Drift,High Stability 4.Precise Resolution touch screeninput Finger,Glover Finger,stylusMaterial ... ITO Glass Thickness 0.7;1.1,1.8,2.0,3.0mmITO Film Thickness 0 ... force 15-70gsurface hardness 3hlife expectance>1,000,000Nib 0.8mm,playing key load 100g,hit the speed button ...