This is a dock for the Apple Watch. The internal section spins so that the wire can be adjusted to the needed length or retracted completely for portability. The two pieces should be printed separately.
***UPDATE: The file Internal 2 has been added. This model eliminates the handle to make the model stronger and slightly more compact. Small cutouts have been added in order to make the internal piece easier to turn.
To set up: insert the Apple Watch charger into the internal piece and then wrap the wire around the center. Line up the tabs of the internal piece with the slots of the external section and slide the pieces together.