How long will an Apple Watch 3 or 4 last when completely idle?

Question

Apple

How long will a 100% charged Apple Watch work when it is on, lying on a shelf, not connected via Bluetooth to an iPhone. All sensors are on, economy mode is off.
I don’t have such a watch, so I could miss some nuances in the settings. Watch without a mobile module, or if possible, it is disabled.

Answer 1

the case that took place in my case.
the watch removed from the charging plate is put on the arm, an hour and a half of activity - walking, driving a car. then placed on the shelf. They lay until the end of the day and the next day. The next morning after these days there was a minimum charge. They were connected to the phone. So in your case, I think it will last about three days.
AW 42 3 generations without gsm, at that time the clock was half a year old.