This entirely mechanical pocket watch features the an alarm that uses an internal music box to play "Oh what a beautiful morning". The face of the watch also features three moving automata.
The man on the horse moves his arm up and down, the horse lowers its head to drink the water and the lady operates the pump. In a very nice bit of detail, the water itself can be seen flowing from the pump into the basin.
The watch comes with its original box and key -- a Breguet ratchet style and is used to wind up the music box. There is also a button on the back that will start and stop the music and automata.
Here is the complete eBay listing with many more nice photographs of the musical alarm pocket watch with automata by Reuge