SIRI 3 is a sound-activated clitoral vibrator that responds to music frequencies in real-time and transfers them back to the clitoris as pleasant vibrations using SoundSense technology. It has eight powerful pleasure settings and two built-in microphones to offer precise sound recognition and noise cancellation, eliminating all undesirable environmental noise.SOUNDSENSE TECHNOLOGY. SoundSense technology allows SIRI 3 to respond to music frequencies in real time and transfer them to the clitoris as pleasant vibrations.FOCUSED SOUND RECOGNITION. Automatic gain control that effectively reduces the volume if the signal is too strong and raises it when it is weaker.EIGHT POWERFUL PLEASURE SETTINGS. SIRI 3 offers 8 different vibration patterns, varying in intensity from a teasing murmur to a satisfying pulse.USB RECHARGEABLE AND FULLY WATERPROOF. Enjoy unlimited climaxes anytime, anywhere, including the bath or shower.