1. There are 8 jade rollers in the back part and 10 jade cups the lower part, which have pressure, scrapping and other massage functions. 2. Equipped with mp3 function and 6&12 jade projectors. 3. Release far-infrared ray to heat the body and promote blood circulation. 4. The back unit bedstead can lift 45 angle points. If you are interested in our product, sent a email to me, i will sent you more details