Looking for a smartwatch for my dad... any suggestions?

Hey guys, I need some help.

My mom mentioned that my dad wants a smartwatch for Christmas. He said it would be interesting to check his sleep schedule and heart rate.
It took a while to get him comfortable with WhatsApp, and he mostly uses his phone for work on the construction site. Maybe something with GPS for geocaching.

The watch should look like a regular watch and doesn’t need too many features, like tracking workouts (he won’t use that).

Right now, I’m thinking about these three watches:

  1. Ticwatch Pro 5
  2. Amazfit Balance
  3. Huawei Watch GT3

Any suggestions or thoughts?

The Huawei one is great, especially with its long battery life.

What app or device does he use for geocaching?