Imagine your surprise when you check out an Apple Watch collection at an Apple Store this week and find that the best display isn't the most expensive. It's not the display that's making the difference, it's what's covering it. According to a study done this week by DisplayMate, the sapphire crystal that covers the OLED display on the Apple Watch does two things. One, it reflects light and creates significant glare in bright conditions. Two, it protects your display far better than glass.