From the manufacturer
Anker Nano (PowerPort III Nano)
The Super-Small 20W Charger for iPhone
The Power Your iPhone Needs
Anker Nano is designed with a 20W output to match the max input of iPhone 12, so you can provide exactly as much power as your iPhone needs.
Fast Charging Charge iPhone 11 to 53% in just 30 minutes—that’s up to 3x faster than with an original 5W charger.
Compact and Portable Measuring just over 1 inch on each side and weighing about the same as a AA battery, this is a high-speed charger with unrivaled power and portability.
One for All Anker Nano is optimized to work flawlessly with a wide range of smartphones, tablets, and more, so now you can charge all of your mobile devices via a single ultra-portable charger.
Advanced Charging Technology Anker’s latest technology uses a stacked design with custom magnetic components to reduce size, boost efficiency, and improve heat dissipation.