Try a Garmin Forerunner or Fenix.

My wife and I have had the same bad luck with most wearables. I went through 3 MS bands, she went through 2 fitbits and all of them physically broke.

I had a Motorola Android Wear and Polar M600, both of which degraded to less than 24 hours of battery life after less than a year of ownership of each.

I have a Garmin 645M, which I've had since launch, and it still works fine and has days of battery life, even when doing morning runs listening to spotify from the watch. I finally convinced my wife to try a Garmin 245, and she hasn't destroyed it yet.

I've had all 3 gens of FitBit and never had hardware issues. My gripes have all been on software (refusing to integrate with Apple Health, I don't like the new "sleep score", and I don't want a "premium" monthly payment). I did upgrade when the previous ones were no longer functional, but I had used them constantly for a few years each time.

However, I used to leave the charger plugged in my bathroom because I would charge it when I showered. I noticed the charging posts got crud on them and got smaller over time until my FitBit would no longer charge. Eventually, I started unplugging it except for when I was charging and that fixed my issue.

I had the same experience with multiple FitBit devices. Every single one of them had to be replaced, after only a few months, within the warranty period. The only device I ever owned that didn't need a warranty replacement was a FitBit Aria scale and that was a return/replace with the store after the first one was DOA.

Garmin or Suunto provide much better quality than Fitbit, Fitbit is a cheap quality. Garmin, Apple and Suunto aren't. Just check what the pros are using :)