Oh nice, I'll try measuring.

As for strap, they have an elite strap that I hear is really good (and one with a battery as well) but they have been breaking easily so they stopped selling them while they working on improving them. I hear they are a lot better and I plan on getting one but it isn't cheap $130 with the battery and case (both of which I want, but they charge a premium). There might be aftermarket options soon though.