It's a radio-controlled clock
I don't know much more about it than that it exists and you can get one for ~30 EUR on ebay.de
Are you looking for a user's manual or service manual?
Here's a patent that mentions the RC2 and tells a bit about its movement: http://www.patent-de.com/20050324/EP0990960.html
The article "Junghans Funkuhr RC 2" by Wolfgang Ganter, published in Goldschmiede- und Uhrmacherzeitung, 1988, Vol. 1, page 148-149, discloses a radio controllable clock with two motors, one to drive minute and second hand, one to drive the hour hand. The position of the hands is detected by a light beam barrier and corresponding apertures in the gear wheels that drive the hands.