This thing is amazing. I can plug up my iPhone and GPS to charge at the same time, and whenever I go on a long trip I don't leave the house without it. Even my Dad borrows it from me when he goes on trips as well. This thing seems to even work better than my iPhone car charger. Solid durable product, though to quote my Dad, the bright blue light might prove a little painful when driving at night for long periods. I don't have that problem.