Product cheap, easy to use and compact. To travel to the usa, you have this adapter (only 1) + strip. I took a 6 outlets. One adapter plugs into usa sector the strip on the adapter and go to load almost every day: 1 iphone, blackberry 1, ipad 1, 2 mp3 players, 1 charger for camera, 1 pc portable and 2 brushes for electrical teeth. Only in recent n were not indicated as 110/220 but charging has worked flawlessly. Compatible with all outlets encountered in hotel chains, motels, tents has Yosemite and even the Charger Dodge Caravan hire ... Facile, c is everywhere the same pattern.
Therefore essential and, as usual, delivered quickly and inpeccablement by Amazon.