Absolutely perfect, serious.

Power outlet strip overly convenient.
I love the shape that does not take place on a socket as home and abroad.
This is particularly powerful and effective.
It is easy to find some outlets everywhere but often isolated: this device allows simultaneously to plug multiple devices, a must!
(Along the fault often lies in wait and it's embarrassing breaking power failure.)
No lightning protection socket but do not need. Used to charge four devices simultaneously (although be careful votlage - the user manual is quite clear and does not need to know English to read: very good explanatory drawings.) -
The charger has two USB ports for charging, one with and one with 2.1A 1A. It can therefore be loaded two devices simultaneously with a total current 3.1A.
An LED located between the outputs can be monitored and even use a flashlight.
In particular, the output of 2.1A is very convenient because you can charge your smartphone quicker than a normal charger outlet.
Both are so much faster than the USB 2.0 port of the computer that provides maximum 500mA.
The power of the terminal 2.1A power bank, for example, strong enough to let applications run simultaneously and charge extra battery; it worked fine on my Iphone 4 both occasionally demanding applications and navigation with GPS, various Android devices, Apple, PSP, GPS ...
Fully satisfied by the food bank, load performance is very good, you can charge two devices in parallel and identical total reliability.
Its price is also very suitable for the enormous capacity: hard to do better in this area.
I highly recommend!