Automatic male masturbators are a type of masturbation cup. These masturbation cups have a container that houses a sleeve made from soft material, usually silicone.
The sleeve itself has a hole on one end where your penis goes into. If you’ve seen a breeding mount on a farm, that’s basically the idea, only smaller and more handheld.
Now, normally, in order to use masturbation cups, also called masturbation sleeves or masturbators, you’ll need to pump them manually over your tool.
Of course, this basically means it’s no different from using your hands to do your business.
What makes automatic masturbators special, however, is that a machine inside the cup does the pumping for you. This effectively makes automatic masturbators a hands-free sex toy.
You will still need to hold the cup in place, but the movements needed to help you reach orgasm are done by the automatic masturbator.
Aside from the automatic movements, some automatic masturbators also produce vibrations for extra stimulation.