Ordered this memory stick on 14th December and got it on the 19th so it was pretty fast considering the time of the year. And i will be using it for my PSP Slim and Lite.
But yes the product is wel packaged and with a fantastic price of £27.99, you cant go wrong!
4Gb at this price is stunning-I admit paying more elsewhere.
However, I will say this; it IS fully compatible with PSP but you may need to upgrade your firmware and possibly format using the PSP itself. Also the same applies to Sony Ericsson users (I'm running a w850i with 1 of these) but it is a fantastic upgrade at an excellent price.
I advise anyone who can get this stick in their device to do it, and abuse net/high street price differences-sell off your old card to the high street shops to fund the upgrade.
I bought this to go in my Sony Ericsson W810i mobile.
This is the maximum amount of memory it takes, 4GB.
It came in its Sony boxed packaging with adapter, and I am well chuffed with it, I can now transfer all my music over onto my phone and still have room for photos.