The fitness angle is interesting and being able to use Apple Pay is a big plus since I own an older iPhone.
With the maybe max 18 hour battery life I do not see much use for it as a health monitor. Fitness angle is kind of faddish to me and there is a lot of lower price products for this all ready. I really don't want to be taking something at this price point and leaving it in my locker at the gym while I am taking a shower or using the sauna.
Even using it just as a plan watch you have to recharge it every couple of days. I see people getting tired of having to remember to recharge it.