NPG - Rock Boy Full-Cap Twin-Rotor Glans Vibrator (Black)

NPG Rock Boy Full-Cap is a battery-powered glans vibrator built around a flexible rubber cap and a compact twin-headed rotor. Once the cap is positioned and the rotors are secured, the design keeps direct vibration focused around the glans without requiring continuous stroking by hand.

A wired controller with a stepless dial lets you move gradually from a light buzz to stronger vibration instead of choosing from fixed patterns. The 50 cm cable keeps the control within reach, while the two rotor heads can be positioned around the cap to change where the vibration is most concentrated. The rotors may also be used externally on other erogenous zones when they are removed from the cap.

The cap measures approximately 30 × 30 mm, each rotor measures approximately 30 × 15 mm, and the complete product weighs about 48 g. It runs on two AA batteries, which are listed as included. The cap is designed for glans-focused stimulation rather than full-shaft coverage.

Why You’ll Love It

• Full-cap design concentrates vibration around the glans.
• Twin-headed rotor provides two focused vibration points.
• Stepless dial offers gradual control instead of fixed intensity levels.
• Hands-free format once the cap and rotor positions are adjusted.
• Compact 48 g build with a 50 cm controller cable.
• Powered by two AA batteries, listed as included.

1. Insert two AA batteries in the direction shown on the controller and confirm that the dial is switched off.
2. Apply a small amount of lubricant confirmed as compatible with the rubber cap if additional glide is needed.
3. Place the full cap gently over the glans without forcing or overstretching it.
4. Secure the twin rotor against the cap and keep the cable free from twisting or pulling.
5. Turn the dial from its lowest point and increase the vibration gradually to a comfortable level.
6. Switch the controller off before removing the cap or repositioning the rotors.

• Remove the batteries before cleaning or long-term storage.
• Detach the rubber cap and wash it only with a mild cleaner suitable for its material.
• Wipe the rotors, cable and controller with a lightly damp cloth; do not immerse the electronic components.
• Allow every part to dry fully before reassembly, and store away from heat, sharp objects and direct sunlight.

Is it suitable for beginners?
Yes, particularly for adults who want focused vibration with a simple dial. Begin at the lowest setting and make sure the 30 mm cap feels comfortable rather than overly tight.

What is the difference between the full-cap and half-cap versions?
This version covers the glans with a full rubber cap. The separately sold half-cap style uses a band-like fit that leaves more of the glans exposed.

Can the two rotor heads be positioned differently?
Yes. Their position around the cap can be adjusted to change where the vibration feels strongest, provided the cable is not stretched or sharply bent.