Update 12/29/07
We have been notified that new batches have got an US Socket.
But the device still produces 220V
So it shouldn't be used for US Sockets because they are 110V
As of this problem we offer a free US to EUR plug for orders made before 12/29/07 containing an US plug(Nr ref 3502)
Make a ticket, explain the issue and link to this page

For any purchaser of this product you should buy a US to EUR Plug with it
http://www.neyoo.pl/3502

Beware: the device is 220V with an US Plug