With Pd 20W output, 4900mAh is just nice to charge your mobile phone, handheld game console, and other Usb-c devices anywhere and anytime you need to. No more finding a wall plug to charge your devices when they are running out of power! Say No to tangle cables and enjoy the special kind of wireless charging to charge both the power bank and devices without any cable(s) since the male Usb-c support 2-ways charging.