It is the Fero manual. http://www.ferrofish.de/download/b4000/b4000p_en.pdf

Enjoy the unit. It's nice and small. I had a couple of chances to buy the Hammond module XM2 with the drawbar unit, but no way to carry them around. I looked into the Ferro, for my air travel I decided to go all software. AcousticSamples updated their B5 Organ to V2. A vast improment in sounds and rotary effects. Now I feel it is better than VB3 in many respects. I like all kinds of organ sounds.