`` where the heck be the pulsation ? oh , I see . . I have to create the pulsation '' . unbelivable marketing . very deceptive . if you want to ceate the enrgy this product be suppoese to generate , then fine buy it . you -lrb- I -rrb- have to shake the crap out of it to get the video effect show in this product video . not battery operate . for $ 25 . total crap , change the marketing and reduce price and still I would only rate it a two star . Hope this help .