I have finally received my U1 , I have it for running for 10 days and it is fast only by 3 secs !
On the hind side I had a small scratch my AR, my fault as I was demostrating the toughness of the the bezel by running it against the metal edge of the table and I accidentally scratched it ! :oops:
It is proven, the AR can be scratched.
I will try to post some pictures I took of my U1 on Don's R series strap.
Thanks to all who have given my advices !!!