Fitbit Charge 4 teardown electronics miniaturisation

[@karenwisusa6258]

Would have been nice to see the disassembly…and re-assembly. Got the answer I was looking for by watching your video. It involved the piece you were unable to remove.

[@DouglasWalrath]

the thing off the side is an ambient air pressure sensor for use as an altimeter

[@thaiguyry]

The button prob uses changes in flux via faradays law