Review on RuenTech Compatible for Garmin Fenix 5X Watch Case Cover: Ultimate Protection for Fenix 5X and 5X Plus by Barber Miller

For anyone wondering, this also fits Garmin D2 Delta PX (51mm bezel) perfectly. I was under the impression that Delta PX and Fenix 5X differ only in firmware. The button layout, sensor placement, and watch face are an exact match for this protection on the D2 Delta PX. I could not find a rubber watch case made specifically for the D2 Delta PX. So if you are looking for one, buy it. I also bought a pack of Skinomi screen protectors for the Fenix 5X and they fit perfectly too. You can find screen protectors at the top of the page in the "Frequently bought together” section. I hope this review helps someone else because I've searched everywhere and couldn't find anything that advertised or even said it was compatible with the Garmin D2 Delta PX.