USB wall charger with 4 USB ports, total output: 5V/3.1 A, input AC 100-240V, 50/60Hz 0.5A, output 1: 5V/2.1A, output 2: 5V/2.1A, output 3: 5V/1A, output 4: 5V/1A, maximum output power when using one USB port: 2.1A, can charge 4 devices simultaneously. Product Material : ABS.