Zero Tolerance Black Knight Vibrating Cock Ring

The Zero Tolerance Black Knight is a vibrating cock ring in sleek black silicone, with a one-button bullet and a row of tickling nubs facing your partner. It turns penetrative sex into shared vibration with no hands needed, and it comes with its batteries already included. It's a good pick for couples who want an easy first vibrating ring without lots of settings.

What the Black Knight does for each partner

The wearer gets a soft, snug band at the base of the penis plus a steady buzz that carries through the silicone. The receiving partner gets the part above the ring: a bullet housing with small tickling nubs that sit against the clitoris or vulva during penetration. Because the toy is worn rather than held, nobody has to free up a hand, and both partners feel it at the same moment, which is what makes vibrating rings so popular for shared climaxes.

One button, one strong speed

There's no cycling through modes here. Press the single button and the motor runs at one powerful setting; press again to switch off. Some people prefer that simplicity mid-sex, since there's nothing to fumble with. If you like to start soft and build, though, a multi-speed ring is the better choice. The motor runs on two LR-41 button cells, and Zero Tolerance includes them, so it works straight out of the box.

Wearing a vibrating cock ring

Slip the ring on when you're soft or only partly aroused, with a dab of water-based lube. Stretch it over the shaft and settle it at the base, then turn it so the bullet and nubs face up, toward your partner's body. Missionary, face-to-face sitting and woman-on-top positions keep the nubs in closest contact, because the bodies stay close and grinding motion presses them against the clitoris. In from-behind positions, flip the bullet down toward the testicles instead for the wearer's benefit, or toward the perineum. Keep sessions to about 20 to 30 minutes and take it off at once if anything feels cold, numb or painful.

Size, materials and care

The ring is made from smooth silicone, phthalate-free and latex-free, with the bullet in durable ABS plastic. It measures 2.5 inches long, 0.8 inches deep and 1.66 inches wide, and weighs just 0.5 oz, so it doesn't drag or pull. The whole toy is waterproof and submersible, so shower use is fine. Wash it with a toy cleaner and rinse under warm water, getting into the area around the nubs, then dry it before storing.

Who it suits, plus battery tips

The Black Knight is a good first vibrating ring for couples who want to see whether shared vibration during sex is for them, without committing to a charger or an app. It's light, stretchy and has nothing to set up. If you already know you like to control intensity, or you want longer sessions without swapping cells, a rechargeable multi-speed ring will suit you better.

When the vibration starts to fade, replace both LR-41 batteries together, and take them out if you won't use the ring for a few weeks.

Specifications

• Brand: Zero Tolerance by Evolved Novelties
• Type: vibrating cock ring with clitoral nubs
• Materials: silicone ring, ABS plastic bullet; phthalate-free and latex-free
• Vibration: 1 speed, one-button control
• Power: 2 x LR-41 batteries, included
• Size: 2.5" long x 0.8" deep x 1.66" wide; 0.5 oz
• Water resistance: waterproof and submersible
• Colour: black

Compare other cock rings, see the Zero Tolerance range, or read our guide to cock ring types.