Already have a 6 and a 6X, but decided I wanted a Delta. Saw Garmin had 20% off last week, and in stock. Thinking the coronavirus outbreak is eventually going to slow products from China I decided to grab it. Ordered on a Saturday evening and had it Wednesday. My F6 Ti Sapphire has very black backlight with good contrast, but this one is even better. I’d say the domed sapphire helps with clarity and readability a little bit vs the F6 and F6X, but still noticeably more reflective than the glass on my Vivoactive 4, obviously. Beautiful watch.