version of the Suunto FAVOR.
There isn't much you can play with the computer- you can only change the time and altitude settings (A0 and A1, leave it at A0 if you dive below 2000 meters).
Pressing the "com" and the "time" buttons (left and upper right) allows you to toggle between the different modes: LOG(last 9 dives), HIS(total number of dives, max depth), SET(time, date etc), ALT (altitude compensation), and so on.
Pressing the "com" and "plan" brings a screen where you can see bottom times for depths between 9-45 meters (or equivalent in feet).
That's all.
During the dive it self activates and you can see dive time, depth, max depth, no-dec time etc. Also you have an ascent indicator.
In case you reach the no-dec time to zero, you'll see an indication to ascend to the decompression stops: ascend time and ceiling.
Simple, user friendly, cheap and it works great.
But, hey, all this stuff should be in the manual. If you have specific questions, you can send me a message.
BTW no Nitrox setting for this computer, so you dive Nitrox on air times. Not so bad IMHO.