I recently noticed some rash on my wrist that touches the back of my stainless steel Fenix 8 and came across nickel allergy in stainless steel models. So, I tried searching if titanium models would solve this. I noticed that in previous Fenix 7 Pro titanium models, the specifications for the case material read "fiber-reinforced polymer with titanium rear cover". However, for the Fenix 8 titanium models, it reads "fiber-reinforced polymer with metal rear cover". When I checked with a local Garmin store, they said that all Fenix 8 models had steel rear cover, including the titanium models. I thought this was a bit of a misleading marketing by Garmin, especially when everyone had assumed, coming from past titanium models, that the rear cover would be titanium too.
Hoping that Garmin would state officially in the specifications page or verify this.