Power bank w/ MagSafe & Apple Watch

Ive always used my iPhone with a MagSafe power bank for easy charging will using it, however I recently got an Apple Watch and wanted to know if there’s any power banks which can support MagSafe so I can use it while using my phone and if needed but not at the same time include a slot where I can charge an Apple Watch?

I’ve seen the anker Maggo but I want to be able to have it on the back of my phone using the MagSafe.

I found one on Amazon but it doesn’t look like a good brand and wanted to see if anyone knew of one from any established brands out there.