This Smooth Trip & reg compact international adapter, plugs, and a built-in converter changes 220V foreign electricity to 110/120 volts for 2 and 3-pronged U.S. appliances. Includes a USB power port with LED and AC indicator lights to keep cell phones charged and ready. Built-in surge protector keeps electrical appliances safe from spikes in foreign electricity. Easy to follow instructions included, not recommended for appliances over 1875 watts or electronics exceeding 50 watts. Never be without power, at home or abroad. Materials: ABS. Product Dimensions: 3"L x 3"W x 2"H. Weight: 0.42 lbs.