Both versions are absolutely identical. They differ only in the colour and the plugs. The FC5 has no bags. Only a mini collecting container for the used water. Better said: the container is large, but can only be filled with approx. 15% of its volume. Be sure to read the operating instructions. Protects the motor.
Unfortunately, the original Kärcher packaging is too weak. My Kärcher was delivered with a crack in the casing. Unfortunately, I didn't want to wait another week for the part and replaced the plug with a CH type, plugged it together and used it the first time before I noticed that the extension wasn't holding properly because of the transport damage. My tip if you don't care about the colour: order the CH version and either cleaning additive or replacement rollers extra. Then hopefully Galaxus will take the trouble to pack the part properly and it will arrive undamaged. Otherwise, it's a real pleasure.