Basically a double vibration.
I had high hopes for this product, unfortunately it didn't meet expectations. First off it took forever to connect with Bluetooth initially, but worked fine after. While the vibrations are good, that's about it. Sonic wave didn't really happen. Insertion is off putting, with fart sounds coming back from escaping air, as no valve, thrusting is not possible. This is really just a double vibration masturbator, with a price tag. Apart from the cleaner and lube, the rest of the kit is unnecessary.
