#715 - Inside The Joycons

In any Nintendo Labo game, if you move the camera to show the inside of a Joycon during the tutorial, you'll see that they're fully modelled, including the circuit board. The interior of these Joycons is never shown intentionally during gameplay.

SOURCE: https://nintendoeverything.com/nintendo-actually-modeled-the-inside-of-a-joy-con-for-nintendo-labos-software/