just a few things ...

First the good things: while this NOT a dive computer, it does save enough information that you can figure out your surface interval, and save all of the vital numbers for your dive log. I do not have this, but did have its predecessor the Citizen promaster c500 Natulite with the glowing dial AND hands, it turned into a big glowing blob when diving in less than stellar conditions. I would advise getting a black face.