I bought this adapter before a family trip to London and Paris. I loved the fact that i didn't need to purchase different ones for the EU and the UK. The adapter is easy to use. Just select where you are and you are done. It also has several slots for USB cords. Even though I am back in the USA from my trip, I am still using it as i can charge several devices at one. My family loved it so much my parents bought one also when we returned. I didn't have any issues