Holy sh1t nostradamus, please enlighten us some more.
I'm not trying to be a smart a$$ about it, but come on it's not rocket science.
If it says machine wash, then you shouldn't be skeptical about washing it.
If it says line dry, then why risk running it through the dryer.
They wouldn't tell you to wash it if it wasn't okay. How many returns and complaints do think they would get if it stopped working after washing (especially if they said it was okay). I'm sure they water proofed the electronics.
Plus, who's going to make clothing that you can't wash...ewwww.