As far as i know smart watches are used to make calls, view messages, view social media notifications, etc. Even for sports watch, we can see heart rate of the body, blood pressure, activities like walking, cycling trek are done. But never heard of using bitcoin with smart watch. Especially this is not possible in my country because crypto is banned here for now. But with the change of time we will discover many such things. Creating such smart watches for crypto will be more convenient for everyone as transactions, crypto assets and fund tracks can all be seen in moments.