Choosing "superlumed" in the first place, Your best bet for long-lasting readability is amongst PAMs and by using a 18650 flashlight in Your carry-on. Really strong are the first 10-15 minutes and good the first hour although all above (except the Omega) will be readable for 8 hours in a dark room. The mini-Egiziano and the vintage Tudor are relumed. The Noob Blancpain and the PAM212 are some of the very best lumed ones otb. The California is a special sandwich dial, the one below a modded Seiko SNZH55