Screaming O® 4B - Hluboce dunivý dvojitý vibrační kroužek DoubleO® 6

The double rings actually stay put once you get them adjusted, which was my main worry. That 4B motor has some serious low-end power, and the fifth speed is genuinely intense without being buzzy.

Those rumbling vibrations are something else—so deep it almost feels like a separate toy. The dual rings keep everything locked in place without pinching, even during, uh, enthusiastic sessions. Five speeds plus the pulse setting is plenty of variety for us.

The double rings held everything snugly in place, and the 4B motor’s deep rumble was noticeable right through the silicone—definitely not a surface buzz. The pulsating mode was my favorite, though I wish there were a couple more speeds in between.