I have a Belkin duo combo. Phone and watch charging. It’s not the fast charger
Any Watch charger can be used on an Apple Watch that is Watch specific. I wish I could swap it out and put the fast charger on it. It does have a usb so I can insert it to still use it tho
Eventually I would like to upgrade it
I get a corporate discount from Apple so I ordered the Belkin 3 in one
And will take my current one to share at work if we need a quick charge. I am such a nice person!