In addition to the green hour markers and hands, there is some green aluminum on the helium release valve that is meant to add some style. I still don't think the watch is meant to be a fashion timepiece, but that isn't its point. It is a happy, and stalwart tool that adds enough flair to never be boring. Christopher Ward put a Sellita SW200-1 automatic movement inside the watch. This is basically a Swiss made clone of the ETA 2824. Attached to the watch is a pretty basic rubber diving strap with that standard "wave" pattern near the lugs for added flex and comfort. The strap is very comfortable. It is a bit tough to get the excess strap in the loops, but many rubber straps are. I had no problems with the strap, but those who want to "dress" up their C600 might want to experiment with other straps that add a bit more flair to the design.
Yes, it isn't a watch, but it is what a belt buckle is when made and designed by watch makers, and people in the watch making world. I haven't specifically written about Roland Iten before on aBlogtoRead.com, but he is an inventor and a designer - and he is very talented. Roland Iten is based in Switzerland, and his items are totally made in Switzerland. Few people have his eye for aesthetic, taste, and engineering. He is sort of an ultra suave nerd - my kinda guy. In fact, in his words, the three principles that lead all of his designs are "performance, skill, and sophistication." The implication is that these elements are what make his inventions interesting, are why his clients are attracted to the luxury gadgets he creates. What I like is that his products are all useful. Perhaps useful in the luxury sense sometimes, but more than mere novelties.
As the name of the watch makes clear, this timepiece has a double tourbillon. What does that mean? Well it is not exactly two tourbillons (like you see in some other watches such as Roger Dubuis sometimes does), but rather one tourbillon located inside of another tourbillon. I believe that this is much more complicated to do - clearly. So what you have is a diagonally mounted one-minute tourbillon (makes a complete revolution each minute) inside of a four minute tourbillon. this does not take up as much area as you would think. The outer tourbillon has sapphire hands that stick out of it that go along a scale as the bottom of the watch. They are used for tracking the four minute rotation time of the tourbillon. So that you don't need to look at the little inner tourbillon, the watch has a separate seconds subsidiary dial located close to 9 o'clock.
According to MB&F, the main inspiration behind the Thunderbolt watch is the A-10 plane - though lots of people speculated about it being something more Sci-Fi in origin. Actually, 'Thunderbolt' is just one of the plane's names and nickname, but it is the official name, and likely the "nicest" for a watch. The other options are "Warthog" and "Tank Killer." Neither is particularly well-suited for a luxury watch as far as MB&F is surely concerned. You can see two images I have placed in this article of the A-10 plane. The HM4 is themed after the placement of the two large, top-mounted jet engine turbines, as well as the fact that they wanted to do an aviation themed watch. By the way, the A-1o is an awesome plane. It has been used for decades, and is one of the US army's most powerful air-to-ground attack planes (that isn't specifically a bomber, and it has many benefits over a bomber). Always exciting is the giant nose-mounted gatling gun. The plane is also really strong, having much more armor than other planes. Because of its hefty weight, it has those large engines to help it take off and fly as best as possible.