Garmin
Forerunner 255 Series
Long battery; but wrist HR tracking is inconsistent.

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But I checke if I change from my 41mm pixel 2 to pixel 4 41mm the battery size is almost the same 45mm is too big for my wrist
I went from Pixel Watch 2 to Apex 2 Pr. You give up assistant is the big thing but get battery life in return which is way better because I only have to charge one or twice a month vs every day so I was rarely tracking my sleep because I had to charge every night.
I just bought a Pixel Watch 2. I had a flex, blaze, and charge 2. I've also used a Galaxy watch. I quite like the pw2 at the moment and the app doesn't bother me too much, I would prefer more customisation and less AI. But it's a pretty good package... I don't think I'd get a Garmin.
After some time with a Pixel watch 2 here are my 2p: * The health tracking and sensors are awesome * Smartwatch / phone companion features are awesome * The GPS is shit * Battery life is shit * Which leads to me not fiddling much with the watch at all or it won't make it through the day which kind of negates the second point * Fitbit is a bit hit and miss * The app itself is very badly laid out, hard to read * Activity stats are really very basic * The health algorithms are second to none, and it's one of very few systems that give you a real TDEE with reasonable accuracy, instead of just tracking active calories.
I have budget aliexpress smartwatches with better gps tracking than my pixel watch 2. Let's hope the double band does the trick
My pixel watch 2 wobbles all over the place. Into buildings, teleporting somewhere else then back. In the middle of lakes. This is in the countryside, in a city it's even worse. I have a 30 quid budget watch that does far better.
Pixel watch 2 has been phenomenal for me despite the small screen and the poor battery life. But it's been dependable and still has some of the best sensors available on a watch. I've recently switched from it to an amazfit t-rex 3 pro and what an absolute beast it is. Better in every way that matters to me except maybe contactless payments. Top notch sensors, a large bright amoled display, the torch is excellent and more useful that I can express, sports tracking is spot on with plenty of detail and configurability, and I can squeeze about 10 to 12 days off the battery with heavy usage. Love it.
Smartwatches aren't really medical devices, you should really consult with your doctor for advice in a proper monitoring device. That being said, if you have an android phone, pixel watches are hard to beat. Best heart rate sensors and continuous heart rate monitoring. ECG cannot be monitored passively as you need to close a circuit around your body, which means there's an electrode underneath the watch and the other is the crown, you must take spot readings with the opposite hand you're wearing it on.
The best sleep tracking outside of the oura and whoop are fitbit and pixel watches. If you want multi day battery life, it would need to be fitbit. Amazfit, garmin have great battery life and sports tracking, but mediocre sleep stage tracking.
I have the exact same watch, in the exact same Nano Pop case, only mine is the dark blueberry with yellow ring. Not my picture (or arm) but [this is the one](https://www.reddit.com/r/PixelWatch/comments/1hg79tu/i_love_this_caseology_nano_pop_case_the_bands/) I'm using. It's a bloody shame this band is no longer available... like anywhere. I have a brand new Pixel Watch 2 sitting in my closet, got it free when I bought my Pixel 9. I'm keeping it as backup if/when this watch dies. I don't like the charger on the PW2, prefer the smooth wireless chargers of PW1 than the gold prong crap of the PW2.
Idk, maybe I'm not thinking big enough. But I just can't see anything making this worth switching from PW2
Garmin
Forerunner 255 Series
Long battery; but wrist HR tracking is inconsistent.

Garmin
Forerunner 955 Series
Best value, clear MIP screen; limited smartwatch features.

Garmin
Fenix 7 Series
Durable, multi-week battery, flashlight; high price, buggy software.
Garmin
Instinct 2 Series
Rugged, solar multi-week battery; bulky, small screen readability issues.

Garmin
Enduro 3
Multi-week solar battery, lightweight; but bulky form factor.

Ranked #1
Oura - Oura Ring Series

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Apple - Ultra Series

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Garmin - Enduro 3

Ranked #1
Garmin - Fenix 7 Series

Ranked #1
Garmin - Forerunner 255 Series

Ranked #1
Oura - Oura Ring Series