Apple Watch Series Seven Charges Faster With Usb C Ports

The new series seven watches charge faster with the new charging puck. But it's confusing, cause they previously made a charging puck with a usb c port at the end last year. And they're not labelled, of course, cause they're apple products. There's nothing labelling it any you got to use the new one if you want the faster charging, don't use the old one. It charges forty % fasteror whatever the number is. I would like to know what percentage of airpod purchasers get the engraving.