Ordered this in advance of our holidays, because I wasn't sure how many sockets I'd have to charge the various things that we'd be carrying (Nexus 10, Nexus 7, two smartphones, two kindles, Nintendo DS etc... perhaps I should have ordered more chargers!)
It's slightly larger than the Kindle charger, but being 2a (versus 750ma for the Kindle, I believe?) means it'll make a decent job of charging the two tablets, or it can charge both phones @ 1a at the same time.
One thing that wasn't confirmed in the product description was that the input is 100-240v, 60/50hz, so it's suitable for us in the UK/Europe/US (with the correct physical adaptor for the socket)
I'm very pleased with this, it will replace the single 1a cellphone charger that I carry in my bag for minimal extra space, and has the added benefit of being up to the job of charging larger tablets.