Bear Motion Glass Screen Protector for Apple Watch - Premium Tempered Glass Screen Cover Protector for 42 mm Apple Watch Due to the rounded edges on phone and the limitation of Tempered Glass Material, the cover is designed to cover the flat area only. The curved edge area is NOT covered Extremely thin: 0.3 mm / Extremely hard: Surface Hardness - 9H for extreme scratch resistance Extremely clear: Premium tempered glass / Extremely responsive: No interference on touch screen responsiveness Oleo phobic Coating: resists fingerprints and other contaminants and makes the film easy to clean.