I like the idea of blending a mechanical watch with a digital one. The way I see it a digital watch has the advantage of backlight, highly accurate timekeeping, lots of functions and the ability to take one hell of a beating. But somehow they lack that soul which comes from a highly tuned mechanical watch. This way you get both, sort of. If you need a digital function for your next trip to the great outdoors you just slip on the appropriate accessory. However, as I understood it, the whole idea falls on the fact that the watch is not actually integrated with the technology (digital to mechanical) but just a wrist band to attach it to. But I can be wrong, it will be interesting to se some more in depth reviews.