First time buying from First Class - they were the best price I could find on the RS version, when ordered there was a 6 week wait for it, literally 2 weeks later it arrived so that was good.
Watch arrived as expected and I am very happy with it do not be fooled by the small dimensions its plenty big enough I think its the dial size which helps.
I have had it on a leather strap and some nato's - the drilled lug holes are excellent and make life easier!.
My first Sinn and I am very happy with it.