Satisfyer Bullseye | Adjustable Penis Ring with App Control | Medical Silicone for Enhanced Endurance and Remarkable Erection

I like the idea of being able to adjust the ring to the correct size, but unfortunately it feels like they haven't tested it in a real world scenario. Once you add any kind of lubricant, whether it to the device itself or to another toy, it makes the toy unusable as a ring. The little notches that are supposed to hold the "lock" in place are far too shallow, so adding a little bit of lube causes the lock to slide right to the top and ultimately making it either come off completely, or be too loose.Vibrations are fine, they're fairly strong for the price of this toy. But ultimately that's the thing you'll end up with; a vibrator, not a cock ring.