How many versions are there, and what is the latest?
Magic-Flight doesn't identify specific models, nor do they announce design changes, therefore the exact date of a change is not known. In chronological order, the versions are:
1. The original release. The earliest boxes had a small pinhole on the bottom.
2. The pinhole, which was not intended to be a functional part of the design, was removed.
3. A small light was added to indicate whether a good battery connection has been made, and to act as a basic battery power level indicator.
4. The air intake channel was redesigned to be broader and shallower. An O-ring was added around the trench opening. A pushback ring was added in the battery chamber to prevent accidental prolonged battery contact.
5. Maple replaced birch. New stainless steel contact rods replaced the original copper-clad stainless steel.
6. A steel ball catch was added to prevent accidental opening of the cover.