Equipped with state-of-the-art SoundSense technology, this vibrator picks up sound vibrations and sends them to you. SIRI processes and transfers the input audio in real time and delivers it back to your device as pleasant vibrations. It works with two built-in microphones where one eliminates all undesirable noise and sends the signal to the other, which syncs the vibrations to your desired tune. Youre able to play any song you like without worrying about the signal breaking or vibrations stopping. * Size: 3.74" x 1.8" x 1.3" * Weight: 172g/6.06 oz * Battery: 3.7V Li-Ion 420 mAh * Charging: Up to 2 hours * User Time: Up to 2 hours * Standby: 90 days * Includes: USB-charging cord & satin storage pouch **Features:** * Soundsense Technology: Allows SIRI to respond to music frequencies in real time and transform them into 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