This is a charging stand to use with the Apple Watch charger that comes with every Apple Watch. Tested with an Apple Watch 3 and charger. The cable groove should be snug enough to hold the charger cable in place, while routing it under the base and out the back of the stand.
The angled charger holder allows the watch face to be seen while charging, and the access hole in the back allows the charger to be removed by pushing it out with a pencil eraser or pen cap (as it is a snug fit and pulling the wire is not advisable).
I recommend supports, and probably supports from the part and not just the print surface. I also reduced my print speed to 80% and added brim. The base is solid and won't go anywhere, but until the neck connects with the charger holding circular portion; the supports are at risk of losing adhesion under the acceleration of the print bed.
The author hasn't provided the model origin yet.