Ideal for scar massage, desensitization, muscle stimulation, oral stimulation and sensory re-education.Three natural silicone heads massage small muscle areas. Select the ball, spot or flat disc attachment most appropriate for the area being massaged. The cap massages broader muscle areas. This 5″ (13cm) long, 5-1/2 oz. (156g) vibrator easily fits in a briefcase or other types of baggage for travel. Excellent for home use. Each head vibrates at 92 cycles per second with an amplitude of 0.06 mm.