Ergonomically Design: Unique Y-shaped design creates considerable absorption between the rollers and your skin. In addition, little acupoint ball on the end of the handle can effectively stimulate the acupuncture points to help relax. Kneading massage the skin and lymphatic system by the roll ball. can be used to massage any part of the body. Promotes blood circulation, eliminate excess fat, eliminate edema, help you get smooth &firming & resilient skin. With new kneading technology, it relieves sensitivity skin, promotes face-lift skin tightening, body shaping, and improves blood circulation, alleviates tension. No Battery: Gathers energy by mini solar panel on the main body, releases micro solar currents of when massaging. Massage beads turns 360 degrees, can be easily cleaned.