Psion Revo - prototype "Conan"
This is a prototype Psion called "Conan" = Psion Revo with Bluetooth integrated and backlight display.
Psion did the clever thing and stop mass production, therefore only a very few developer units are flouting around.
Some pictures can be found from Russian Psion aficionados: here (link).
If you want to buy it, please contact me.