All-in-one adapter. charger and converter set fits electrical outlets in most countries. The set includes compact international adapter plugs and a built-in converter that changes 220V foreign electricity to 110/120 volts for 2- and 3-pronged U.S. appliances. Includes three USB charging ports (with one USB-C port) to keep cell phones and tablets charged and ready. AC and USB power indicator lights. Built-in surge protector keeps electrical appliances safe from spikes in foreign electricity. Easy to follow instructions included.