I haven't posted on this forum before, I usually lurk in the German and PilMil forums.
I have noticed with my titanium Tutima NATO chrono that it feels itchy where the caseback touches the wrist after a few hours (without sweating). I notice this to a lesser extent with my Sinn 157 Ti Ty. I don't have this with my steel watches. Is it something to do with Titanium Dioxide (?) on the surface of the case creating an allergic reaction? My brother noticed this with his old Breitling Aerospace, which gave him a horrific circular rash on the top of his wrist, but strangely the bracelet did not cause any allergic reaction.
Any thoughts? Anyone experiencing this? Anything one can do about it? I realise everyone's body is different!
I am otherwise a big fan of Ti chronos as they are much lighter on the wrist, and more stealthy, although a little easier to scratch.