【Patented Product, Patent No.: US RE48, 368 E】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 US plug and 4 adapters, it is the top choice for international travel, especially for Europe travel. BESTEK converter for 110V devices: Patented technology converts voltage in different countries including Australia (100-240V, 50/60Hz) to US/Japan voltage (110V, 60Hz) power converters, ideal for charging various small devices less than 250W Worldwide Use: 1 US power cable and 4 international adapters (UK/US/AU/ India plug) , so you could use American electronics in 220V / 240V countries such United Kingdom, Continental Europe, Australia, Italy, Japan, China etc, more than 150 countries over the world. Especially the Paul's cathedral in England, the Forbidden City and the Great Wall in China, the Leaning Tower of Pisa in Italy, Mount Fuji in Japan, and the Opera House in Sydney. Charges 7 devices simultaneously: Supply 250 watts power converter with 3 standard US plugs and four 5V / 2.4A (2.4A per port max) capable of simultaneously charging multiple devices for laptop, bluetooth speaker, CPAP machine, fan, game console,kindle, TV, DVD players, lights, iPad, and other electronic devices outlet adapter. 24-month warranty & safety guaranteed: NRTL safety tested and upgraded hardware provides complete protection for you and your devices. Comes with over-current, over-load, over-heat and short-circuit protections. [*Note: voltage transformer USB outputs are completely isolated from the AC power to prevent all your devices from being damaged. Voltage adapter travel design: Compact size (6x3x1.57 inches) with 5 foot detachable power cable makes this power converter easy to pack and take anywhere you go NOTICE: Not compatible- hair dryer, iron machine, coffee machine, etc. (Regardless of their wattage)