ZAQ W-Sonic Technology 6,000 sonic vibrations per minute, With W-Sonic technology it will enhance massaging with this roller that will help to drain puffiness and unwanted toxins, contour the face and help smooth fine lines and wrinkles. Use it over masks and creams to increase product absorption. Batteries not included Hand-crafted Rose Quartz. Any harmful consequence resulting from misuse or application to other body areas, not following instruction or any other improper applications is neither the responsibility of ZAQ or its affiliates. The above statements have not been evaluated by the Food and Drug Administration. This item is not intended to diagnose, treat, cure, or prevent any disease.