While I waiting for my B19 I went ahead and picked up a used Combat B1 this week. It was a good decision! The B1 should be different enough from the B19 that I can justify owning both of them. This is also the first time I have bought a use watch. While its not perfect, the little imperfection are easy to over look when I reflect on the price I paid. I very nearly went for one of the demo B17 but came across this one before I clicking the order button. One thing that I couldn't figure out is how to set the time to the second, the small second doesn't stop when setting the time. Other than that I think it fits my six-ish inch wrist nicely and the nato is comfortable.