I just got this monster, compared to the previous models, it is somewhat different, a new movement, new look. I still like my old orange and black monsters, very rugged, and true diver watches. This one has a better movement, I hope it is just as tough as the old ones. The lume on the old ones is stronger, but not by much. It is very accurate so far +/- 17 sec a day, not chronometer, but close enough for a daily diver watch. To have better accuracy and diving depth capability you need the Doxa Sub 4000T that I have for my scuba diving, swiss watch that has incredible accuracy and capability, but more expensive.