Fast Charging Block: This wall charger is compatible with USB A and USB C , allow you to charge two devices at once, which means you can minimize waiting time and frees you from messy chargers with various interfaces High-Speed Charging:The usb c charger block supports power delivery and quick charge 3.0 fast charging up to a total of 20 W. The USB C port can charge your iPhone up to 60% in just 30 minutes -3 times faster than a standard 5W chargerr, which guarantees youll spend minimal time on charging