2-prong AC converter socket can step down foreign voltage from 220-240V to 110V/120V, designed for US standard devices when Americans travel to 220-240V countries, such as Conair/babylisspro hair styling tools (hair straightener, flat iron, curling iron) and hair dryers (except Dyson), steam irons, electric kettle etc. 3-prong adapter socket can't convert voltage, can work with dual voltage (100-240V) devices in every country, such as cell phone, camera, iPad, laptop, Dual voltage hair tools (hair dryer, straightener, flat iron, curling iron, hair Clipper, electric shaver), Dual voltage (CPAP, electric toothbrush) and other Dual voltage devices. Dual USB ports (DC 5V/ 2.4a) are compatible with almost all USB charging devices like Apple iPhones, Samsung Galaxy, Sony, Nokia, HTC, LG, Huawei, ZTE, digital Camera.... US/EU/UK/AU worldwide plugs ( each supports 10A Max ) covers over 190+ countries, such as Mexico, Germany, Japan, China,Korea,India,Italy,Brazil,Europe, Asia, the Middle East, Etc.
