1.1" Colour Display
2MB Flash Memory (Just got mine and it says 8Mb flash memory)
They also have the bigger one for around £10 (Product code: 067411)
1.8" Colour Display
8MB Flash Memory
Both models are XP and Vista compatible, no Apple Macs, the keyring has a necklace attachment and keychain. The large one has only the necklace attachment. Also on sale at Dixons, and PC world.