Visit Amazon.com : http://www.amazon.com/gp/product/B000F1SFLK?tag=thefatkidin06-20
SanDisk 4 GB Ultra II Memory Stick PRO Duo Mobile (SDMSPDU-4096-A10M US Retail Package)
9 MBps write speed 10 MBps read speed
4 GB capacity
Lifetime warranty
Adapter included
Ideal for todays feature-rich mobile phones