Just a little tip: we can get that information from the product page, I think most of us would prefer if you instead introduced yourself, explained the backstory, maybe some technical details, etc.

Nevertheless, a very interesting product and congratulations on launching. I couldn't work out how big the device was, however. I was wondering whether it would fit on the back of a watch (whilst the watch isn't being worn, I mean). If this was small enough, I could see this being very valuable for watch collectors.