The title says it all. When it arrived I inspected the PSU and found it was only rated at 650mA and not 1000mA.
When tested on a 500mA load, the voltage dropped from 5.1V to 4.6V. Not very good for any kind of PSU, and certainly not one which should supply 1000mA!! It seemed to be adequate to charge my Sony Walkman, so it's not worth returning.
Amazon should update the advertised listing ASAP, as this is very misleading.