Apple Watch Series 7 Key Specifications/Special Features:Material: PMMA+PC polymer compositeTemperature tolerance: +60° ~-20°Initial smoothness: ≧115°, and keep smoothness ≥97° after friction testing more than 5000 timesLight transmittance: over 90% Other Features: Large view; Strengthened viscosity of AB glue; Easy stick; Sensitive touch; No white edge.  Easy exhaust bubbles than glass material , sensitive touch than glass material. No static. No…