https://techcrunch.com/2020/11/09/apple-magsafe-duo-charger-review-useful-but-expensive-and-underwhelming/

In addition to the new iPhone 12 mini and the iPhone 12 Pro Max, I was able to try out Apple’s new MagSafe Duo Charger. It’s a folding dual travel charger that will hold both an iPhone using MagSafe and an Apple Watch using its more traditional magnetic charger.

Does it work? Yep, works exactly as advertised. Your iPhone will rest comfortably on the MagSafe side of the charger, aligning using the internal magnets. The Apple Watch side pops up and out to allow easy access for closed loop bands. The whole unit folds over to make it easier to travel with and will even fold over backwards if you don’t need one side or the other. It works, for sure.