SAFETY WARNING Worring about the charging problems during international travel? No, don't necessary at all. This converter is the BMW of the charging world. With unique direct EU plug and 4 adapters, it is the top choice for international travel, especially for Europe travel. Use independent research and development of patented technology, bestek converters could converts the voltage from 100 to 240 volts to 110 volts for American appliances, with Up to 92% conversion rate, 50% higher than others. BESTEK is the only ETL certified brand, in the converter market, and NRTL safety tested and upgraded hardware provides complete protection for you and your devices. And this converter comes with over-current, over-load, over-heat and short-circuit protections. And 24-month guarantee. With 250W output power, 4 usb ports and 3 AC ports, this inverter can charge 7 devices at the same time to meet your various needs for international travel. Worldwide use: 1 EU power cable and 4 international adapters (UK/US/Indai/AU plug) support travelling more than 150 countries all over the world, especially st Paul's cathedral in England, the Eiffel Tower in France, the Forbidden City and the Great Wall in China, the taj mahal in India, Mount Fuji in Japan, and the opera house in Sydney. NOTICE: Not compatible- hair dryer, hair straightener, coffee machine, etc. (Regardless of their wattage)