onn. 10,000mAh Portable Power Bank Charger with Built-in Wall Plug. The power bank offers max 20W fast charge your device. And 2 devices can be charged at the same time due to its 2 ports: USB-A*1 & USB-C*1. It's convenient for travel. No need of taking adaptor separately and will be no more anxiety about not having an adaptor. Wide voltage range from 100V to 240V, 50/60Hz. No worries for the voltage.