It is a simple setup, that I really enjoy and ware a lot. The Casio is a very nice design, that is standing out from the crowd, with a retro twist to it, and a great world time function. I think this is the cheapest and coolest GMT watch you can get (I mean coolest for low priced watches). The watch has an analog style clock that always shows your local time, the main dial shows local time or a different time zone. You get a very nice feature, a world map where the time zone you are in is highlighted. Also, you get an LED light that is a nice amber color plus features that are common for digital watches, like alarms, chime, timer and a countdown timer. The Casio is 100 meter water resistant.
Not as good when it comes to water resistance is the Faber Castell Loom metallic fountain pen. But I love it the way it is. It is an all metal body that doesn't show fingerprints. It has a grey color. The cap is the make it or break it part of this fountain pen. Many are put off by it, as it is different from almost everything on the market. The rest are put off by the weight of the fountain pen. The rest just love it.
The cap is made out of plastic and can come in many strong colors. I chose the grey one, or better said, it chose me as it was the only option available with an F nib in my local shop at that time, and any other color I had to order it and wait for it.
I am curious to see your set up or ideas of a watch - fountain pen combo that would look nice together.