[Efficient Performance] Total output 5V 2.1Amp, when using 1 port, the charging speed is 2.1A, when using 2 ports, the charging speed is 1A for each port. Full charge about 1-2 hours for iPhone and other smartphones. Adaptive fast charging, also work for 5V 1A device. Adaptive fast charging, also work for 5V 1A device. NOTE: This is USB A charger, not compatible with original USB C cable, if you want to work with USB C cable, you should choose USB C charger [Universal Compatibility] Compatible with all USB device: iPhone 17/ 17 Pro max/ 17 Pro/ 17 Air/ 16e/ 16/ 16 Pro/ 16 Pro Max/ 16 Plus/ 15/15 Pro/15 Pro Max/15 Plus/14/14 Pro/14 Pro Max/14 Plus/13/13 Mini/13 Pro/13 Pro Max, iPhone 12/12 Mini/12 Pro/12 Pro Max/SE, iPhone 11/11 Pro/XS Max/XR/X/8/7/6/6s, Samsung, Android, Motorola, LG, Nexus, Oneplus, HTC, Nokia and more device