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  • Author Author: tariq.ahmad
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Garmin Fēnix 7S Solar Tear Down -- The Electronics Inside 57

I'm probably not qualified to properly "review" a fitness tracking watch (fitness?  meh). However, as a daily smart watch wearer since about 2013, and as someone who takes apart electronics to see what makes them tick, I think I'm well qualified for a teardown! We received the Garmin Fēnix 7S solar smart watch, so let's dust off the microscope and see what treats this fitness tracking smart watch has to share with us.

FORESEE, a brand of Longsys, is the supplier of the eMMC storage chip on the watch. It is incredibly small for a 32GB capacity and it supports emergency power-off protection and online upgrades.

  • This is a great teardown, I always admire the HW designers that are able to embed so many IC (especially BGA) into such a small form factor.

    How many layers could the main PCB have?

  • in reply to koudelad

    Meanwhile, a link to Youtube:

  • in reply to koudelad

    No, I don't think it's you! I'll get someone to take a look!

  • Is it just my browser, or the embedded video is missing?

  • Great teardown.

    I am amazed at what they can push onto the PC board.

  • in reply to beacon_dave

    I actually believe the sound is made in a speaker on the right hand side next to the battery, and is broken out from the flex ribbon. The bit on the inside of the can I guess was a Tim pad of some kind?

  • in reply to colporteur

    I didn't turn it on or test it before the teardown. I did however confirm it still works fully after reassembly!

    With those two data points I'm going to assume it was broken before hand, and I fixed it without realising!

  • Can you confirm if the watch was working before disassembly? DId you reassemble the watch and confirm operation?

  • Was there the usual annoying little coil spring for the piezo buzzer or was another pogo pin used ?