Gift for s/o

I’m trying to get a watch for my partner but am unsure which one is good. He’s trying to lose weight and is outside most of the time for work. He also has a Galaxy s24 ultra. Price is not an issue for me but I don’t know which ones are good. I was thinking of getting him a Samsung galaxy watch but don’t know. Please help!!! If this helps he works in construction and is an architect.