The obsolete thing remains to be seen.I have a Tag watch I bought 5-6 years ago for around $2500. If I sold it, I could probably get roughly $1500 for it now as its in near mint condition. An Apple watch with a degenerating battery that will be obsolete within 2 years will lose 95% of its value in 5 years.
I seriously don't understand the purpose of the Apple Watch...and I've owned 6 Macs, 4 Apple TVs, 7 iPhones, 5 iPods and 5 iPads.
A Rolex gets service every 4-5 years which can cost up to $700.
Service on an Apple Watch could include swapping out the internals (computer, battery) with the latest version for the price of a new Apple Watch Sport ($350-ish). The internals are the same, after all.