[Fast Charging Cube] This apple watch charger series 7 USB C charger block and USB C power adapter which compatible for Apple Watch Series 8 and iPhone 15 charger block provides a high-speed and safe charging experience. 20W USB-C power delivery port and a QC3.0 USB-A fast charging port support fast charging for most mobile devices and Magsafe
It’s safe but you will need a usb c to usb c lead (if you don’t already have one) if you mean the current Apple 20w as the plug needs usb c but the lead for the paper white gen 5 is a normal usb for the plug and usb c for the device. Amazon didn't include a usb power adapter for a reason. . 171 388 444 90 6 470 37 421