All of my better watches in the $100+ range use the more expensive glow-in-the-dark material on their luminous dials. The problem is that some of my cheaper watches get more wrist time than the more expensive ones, and the cheap ones, big surprise, tend to cheap out on the GITD material.
For example, I’m really fond of my Casio MDV106-1A but the large hands that make it so easy to see with my old eyes in the daytime don’t glow very well during normal use. So what I sometimes do is charge my watch dial with a flashlight before I go to bed. This makes even the cheaper watches glow all night!
It’s as simple as it looks in the animation below: just put a really powerful flashlight right on the crystal and let it sit there for a minute or so. The material can only hold so much of a charge, so it doesn’t need to charge very long if your flashlight has good output.
Below you can see the end result: