Wall charger(adapter) is the one that is connected to the wall socket and charges your phone. The voltage, frequency and type of the electrical socket varies with different countries. For example the voltage, frequency and the power socket of U.S.A is different from that of U.K. Input: AC100-240V (U.S. & World Standard), Output: DC 5V/2.1-4.8A. Wide voltage range matching different safety voltage standards.We use PC fireproof material, Provide multiple protections, including: Output short circuit, built in over-current, over-voltage and over-heating protection etc.Wall usb charger has one usb port , dual ports, triple ports and multi ports. Usb2.0/3.0/QC 2.0/3.0/PD fast charger,We have We know you got multiple mobile devices, need easy charging accessibility for all at once, at one place. This multi port usb charger is designed to do the exact same job. Henceforth no short of USB-outlets, no ‘waiting-in-queue for charging’ or no vigil-keeping on charging at various places. Compatible with iPhone 8, 7, Se, 6s, 6s Plus, 6 Plus, 5, 5C, 5S, iPad Pro/Mini/Air Samsung Galaxy S8, S7, S6 Edge, S6, S5, S4, S3, Note 5, 4, Tab HTC One 10 A9 X V S M9 M8, Kindle (Fire) LG G5, Optimus F3, Nexus 5 6 7 9 10, Motorola Droid RAZR MAXX, Blackberry and all mobile and electronic device .