Originally Posted By Heinz
This one is made from submarine steel

http://www.sinn.de/de/Modell/U2.htm


Heinz, were you aware of these:

http://www.manufactum.de/sinn-uhr-gsg9-c-1656/

I cannot recall the exact number, but iirc it was 40, (it probably says in the link) and each of the EZM2 were ex-GSG9 service watches. Sinn took them back when they resupplied the force with new time pieces. The ones that weren't beyond repair were services and then sold via Sinn dealers. In many cases, there was such high demand that they ran a lottery, the winner being given the option to purchase one. An interesting piece of Sinn history.