Well I have had galaxy 46mm , had it around 2 years, the altimeter is so inaccurate its unbelievable. I sent it back Samsung they change the motherboard as they call it and said this should fix the problem. Well it never still the same. Sunday I got a 300mb update, I thought great hopefully this will solve the problem , unfortunately NOT it's still a waste of time. Samsung seem more interseted in adding relevant things like ARemoji , bitemoji so you can send them through your watch and other useless addons , why would anyone want to send emoji's with the watch when you have a phone.