Had this for a couple of weeks now and am delighted with it.
The main draw is the fact that it's automatic. That means a sweeping second hand (as opposed to the ticking of a quartz) watch, and a clear back so you can see the various cogs and mainspring spinning around. Sounds geeky, but there is a certain "something" about an auto watch. You won't get the accuracy of quartz and the power reserve is only about a day but that isn't the point. It's about the movement of your wrist powering a watch accurate to within a few seconds a day.
It is quite small by today's standards, but looks smart, quite suitable for the office. Nice clear face and powerful lume.
The "5" refers to the five attributes of the watch: water resistant, automatic, shockproof, day/date display (in French as well as you want!) and a diaflex (unbreakable) mainspring.
Simple and robust it should last for years. For the price it's an absolute bargain.