Mobvoi - TicWatch E3

I use Garmin fēnix 6 but due to its incompatibility with hevy, I bought a second-hand ticwatch e3 to use at the gym...

With under 150USD you can probably only get TicWatch E3, it will still outdo majority of other watches in battery life, but it's no match to the PRO lineup in battery life. As for others I wouldn't even consider them if you're looking for over a day of battery life.

I've had a bunch of watches -- currently on the PW3 (large) and previously a bunch of Ticwatches. The battery life on the Ticwatch was amazing, but the software was buggy and the updates were slow. Apart from a few issues around swim tracking, the Pixel Watch is amazing. I regularly get 36+ hours of battery life and I don't have any issues with going two days without charging. Another option is a fitbit. You get most of what you want, with better battery life, but less powerful notifications. Also -- PW and Fitbit both give you a daily update based on your sleep and blood oxygen, heart rate etc to give you a better idea of your state of health and readiness. So I don't check them all directly, but it does help. And the PW3 does have a loss of heartbeat detector so that if you faint, it will call emergency services (in a few countries right now)

I loved the TicWatch initially and am on my second one, but I won't be buying from them anymore despite having the nice separate LCD screen to help with battery. I'll be ordering the Samsung Galaxy Watch7 in a day or so.

My watch, my 2nd one but can't remember model, as it just died, straight up didn't support it. Mobvoi blamed Google and vice versa. Oh well, Samsung will be my next, and I'm happy with my S24 phone too