Ulysse Nardin

I am considering purchasing the gmt dual time big date with a ss braclet to replace my Rolex Exoplorer II. As I am not able due to location to physiclaly inspect the watch.(I do buy through an agent who trades used) I am concerned about the heft of the UN... 

I don't know the Explorer II specifically, but I do remember the UN bracelet being more "massive" feeling, if not in actual weight, than the older rolex ones A

You'll love the UN, it is a tad lighter than my GMT Master II, both in SS.

It is my opinion that the UN GMT +/- is the best GMT on the market. It is easy to read and easy to use. It has a number of features not common to others such as the fact that the hour hand on the dial is the local time not some shadow hand or on a subdial... 

.... that the UN steel bracelet is in any case heavier and more solid than that of any older Rolex. While the older Rolex bracelets often did not have solid center links, neither solid end links, and a rather lightly stamped clasp, all these parts are sol...