Of the simple wrist computers I have used (puck style), it has the biggest display, because (as mentioned) it is not made to fit into a standard console so Mares used the extra real estate to make for a bigger layout. I used to be concerned that because they also put a lot of info on the display that students could get confused, but surprisingly, most seem to prefer the lots of info display of the Puck Pro to the much simpler display of the simple puck style computers.
The backlight is good, nothing special, but then again since the switch to backglow lighting all dive computers have gotten pretty good. It's not an OLED display, but then again most night divers I know would not want a computer lighting up except when asked to.
The audible alarm is switchable, and useful without being annoyingly intrusive, again comparing it to other wrist computers.
For whatever reason, I can pick out its "Hey you crossed 20 feet, I'm counting down your safety stop now!" single beep better than any other simple wrist computer I have used.
I really do like it as a basic but extendable computer. Recommendation: get it is the white accent version. It is much more stylish IMHO.