Double tapping the face to light the watch display rarely works. Maybe 30% of the time. The display is very dim and the watch faces are very hard to read. Even though I bought this on sale at 50% off, I wouldn't buy it again. It will be a back up watch for the time only. If the watch faces were brighter and had color, maybe I'd recommend it. Do not purchase if you are expecting color or bright and easy to read displays.
Very disappointed. Not a quality product. The APP does not link to the watch properly. Problems setting the time, plus other problems. I own several Citizen watches, no issues.