You might notice the rope. It takes a 2D picture of your face and try to match it. These are very cute and sparkly. I love these slippers so much. You need a motherboard that supports 7. Even though the product should be easy to assemble it was hard just because the product was not made right. They strip out immediately. Es perfecta por fin encuentro una que me acomode. Our second round with Bose Customer Service initially confirmed that the alarm should NOT sound. I bought two.