This sounds tragic, I'm sorry for your loss. Most people here are advising you to give it back, which also seems to be the legally correct way to me.
But, since it's both about a promise that is up to interpretation and about a sizable amount of money, I'd ask a lawyer.
All I have is a Casio f-91w
You already own the end game watch and win "watch collecting speed run any %".
Now, get out of this sub while you still can.
I hope you also have the authentic Ferrari Porsche to go alongside such an exclusive timepiece.
Adjusted for inflation and with the current Rolex hype this must be worth twice it's original price.
So about 12$.
While most are saying quality>quantity, I'm quite happy with going the opposite route for now.
I have been buying "cheapish" watches below 500 EUR and I love the diversity. I wanted to have a diver, a dress watch, a Quartz watch, a steel and a titanium bracelet watch.
Should I ever feel like it, I can always upgrade within a certain class (e.g. diver -> better diver). And I don't think that buying a single Grand Seiko right away would have brought me as much joy as this journey.
IMHO yes, any watch is obsolete in almost all professions. Where do you need to know the exact time on a regular basis? In any office job, the exact time is only relevant for meetings. For those you usually have an alert anyway (and the clock on your desktop).
In law enforcement/rescue precise time is important (for the report), but you have actual tools (badge cam, defibrillator) that keep and document time for you.
In many cases, it maybe beneficial to know the (rough) amount of time something took, but not the precise time ("it took me 10min to do xy" vs. "I completed this task at 14:26").
So, all in all, I can see limited value in some edge cases, but in general watches have become obsolete.
Genuine Pathetic Philippe
I have no knowledge of this particular watch, but maybe try to update the watch through the app.
Have you considered Grand Seiko? I just love their finish and their smooth sweeping seconds hands. Plus the Spring Drive is a refreshing take on the automatic watch movement.
Yeah, you're right, sorry. That wording was a bit off. But an empty battery is not "kicking the bucket", it's just regular (and cheap) maintenance.
So, as others have said, if you plan to wear it at all or if you plan on selling it, you should have that battery changed.
What kind of question is that? "My car has run out of gas, but it's a 2004 Honda Civic. Do I scrap it or is it worthy of another trip to the gas station?"
It's right there in that guy's palm!