https://wccftech.com/apple-watch-series-3-prototype-appears-to-show-two-contact-points-for-smart-band-support/

The Apple Watch Series 3 was launched years ago and according to the latest, Apple might have been testing support for "Smart Bands". A new prototype image of the Apple Watch Series 3 has been shared by a developer, that aims to show two metal contact points inside the band slot. It appears that Apple was indeed working on a "Smart Band" solution for the Apple Watch.

As mentioned earlier, the image has been shared by the developer and prototype collector Giulio Zompetti, which shows two metal contact points inside the band slot of the Apple Watch. The two ports are visible on both sides of the diagnostic port. According to Zompetti, "two unusual pads are exposed to the band," which resembles the iPad's "Smart Connector." Henceforth, we can presume that Apple could have been working on a solution for "Smart Bands."