A revolution in electro-stimulation technology the Electrastim Flick Duo Stimulator Pack not only has 8 built-in dual channel programs including escalating patterns but is also able to stimulate in rhythm with the movements of the control unit. Whether you simply want to add your own stimulation beat or want to stimulate in direct sympathy with your own wrist movements during masturbation, this patent pending feature will be like nothing you have tried before! The flick feature can be slow or fast, soft or hard - it will mimic the sensation that suits your, or your partners, desire. The flick duo unit has 25 intensity levels per output, ensuring satisfaction for all levels of play.