Another element which I didn’t mention yet, is the above pictured white dot. This being Sinn, that is of course not just a white dot. It is in fact an ingenious feature which would have saved a few of my own watches back in the day had they had this feature.
That white dot is the most important of the three elements of the Ar-Dehumidifying technology which this watch uses (the other two being the aforementioned gas-filling & EDR seals). The capsule is filled with copper sulfate, which is white in a ‘dry’ state. Should humidity or air leak inside the case, the sulfate will absorb the moisture from the air inside the case. The kicker here is that copper sulfate turns increasingly blue as its water content rises. So in case that white turns in any shade of blue – you know you don’t take your watch swimming and instead make a run to your watchmaker to have it serviced! A truly ingenious feature.
Awesome write up 😉 and great side by side wrist shot!!!