The powerful vibration of our vibrators produces a robust, ball-bearing 12 volt DC motor. We prepare this drive with a very heavy imbalance and a hermetically sealed, robust capsule. Drives for sextoys are otherwise based on tenuous 3-volt engines, which are more audible up to shrieking and can only give a pointy, superficial tingling sensation. Our toys, on the other hand, give a very pleasant and pleasurably strong stimulation with depth effect and are virtually inaudibly quiet despite the fact that they are many times more powerful!