BobH wrote: ↑17 Jan 2024, 21:14
"Waterproof" does not describe an absolute.
I am thinking that in this case (
) it does.
I suspect that the working part of the watch is all solid-state, and it is encased in a, well, case.
We might say that my LGK30 phone is four inches by two inches by 1/3 of an inch, but that is really just the case.
I truly did drop it in a bowl of water, fished it out, and then turned it on 24 hours later without a problem.
That puzzled me; I thought that total immersion would short-circuit at high current and fry the electronics.
I suspect that nowadays the working part is solid all the way through, with a pair of wires leading out to the speaker cone.
I can suppose that there are two other wires leading outside the solid-sate and into the case, and that these two wires short-circuit when the watch is immersed, which triggers a switch that shuts down the workings before they fry themselves, and bring in the "water-pump" work of the watch until that second circuit goes dead (because inside-the-case has dried out) at which point the original workings take over.
If my supposition is correct, then there are thousands of smartphones at the bottom of canals, creeks, rock pools etc abandoned by their owners who assumed, as would I, that once immersed, the phone was toast.
Mind you, I'm not sure about all this; it's been a long day.
Cheers, Chris
the phone went dead (natch!) and I took the battery out of the phone and let it air-dry over 24 hours. My latest smart phone is so smart it won't allow me to remove the battery. 
