G'day,
wow, that´s a mighty powerful "oil" 
Very nice, thanks for sharing!
Why the "r"?
In the german, "Glashütter" with "r" is an adjectival use of the substantive (name). Just like "Hamburger", which goes back to "Hamburg" 
The name on the bottle is a nice one; "watch oil from Glashütte". Sounds great for a watchnut 
Salute 
Cheers,
Peter