If you’re genuinely interested then fair enough. Just saying it’s not the only option, as a lot of people seem to think these days, and for personal projects I think it’s bonkers.

Looks to me like they go in unneccesarily heavy handed to begin with too.

Not condoning anything the guy in blue does, but he’s facing a ticket machine and is grabbed by 3 cops and has his neck shoved down.

Don’t use kubernetes.

I’ve had a Polar Pace Pro for 2 years now, pretty happy with it in general though it does have a few minor flaws. In relation to what you’re after:

• It’s fairly robust, I’ve managed to scratch the screen a little recently, but I have whacked it a fair few times.
• Heart rate is pretty accurate, though sometimes it doesn’t detect properly during a workout and shows 80odd when I know that’s not true. Needs a twist or tightening then shows correctly, but can be annoying.
• Sleep analysis is good. It’s helped me realise how much even 1 drink hinders sleep. HRV, heart rate, breathing rate etc.
• I charge about once a week with 3/4 workouts.
• No drinking tracker that I’m aware of, but you could set alarms up.
• Pedometer seems good, though doesn’t cancel during a workout, so after a cycle it tells me I’ve done 20k steps.

I had a Garmin before too and I’m happy with the switch.