One year brand warranty. Specially designed for the complete safety of your iPhone 12 series, this latest 20W is so powerful to combine top-speed charging and battery health protection while few 20Ws can match. Advanced PD 3.0 and 20W fast-charge features allow fastest possible speed for virtually all your phones. In just 30mins, your iPhone 12 juices up to 55% and Samsung S21 gets 45%, all from 0%. As your phone reaches 90% charge, it auto shifts from full-speed mode to trickle-charging mode.