The Garmin Venu Sq is one of the best budget smartwatches you can get. The Venu Sq was already considered a budget smartwatch, but after it was succeeded by the Venu Sq 2 last year, it became even cheaper. I’ve had mine for over three years, and it's still performing like it’s fresh out of the box. Right now, you can get the Venu Sq for $119.99 (originally $199.99) after a 40% discount from Amazon. This is one of the lowest prices for this watch I've seen (and much cheaper than what I paid for it).
I got the Venu Sq in 2021 when I was looking for a smartwatch that would allow me to listen to Spotify on my runs without needing my phone. Despite all the new smartwatches and fancy features that have come out over the years, I haven't felt the need to upgrade yet.
The Venu Sq has all the important features you'd expect from a smartwatch these days, including the blood oxygen sensor that Apple Watches will no longer have. It also has excellent fitness tracking features, up to six days of battery life (still six days after three years), and great sleep tracking. On the downside, the GPS can be slow to lock on compared to more recent smartwatches, and the vibrator is loud but weak.
You can read the full specs on Garmin's site.