Description: Fourth gear vibration intensity, 3D vibration massage ball; diamond vibration texture design, deep fascia relaxation. Sealed waterproof design, ABS silicone material, can be used to clean the surface of the ball. Silicone bumps are used on the surface to massage deeper into the muscles and bones. The skin on the surface is more comfortable, and the muscles and bones can better relieve pain. There are four levels of adjustment, one, two and three levels of freedom to adjust the vibration intensity, four levels of soothing mode, sub vibration to adjust the vibration frequency. matters needing attention: 1. Do not touch or press the massage head during operation. 2. Do not use it in the same place for a long time. 3. In case of discomfort, please stop using immediately. 4. Infants, minors, pregnant women, pacemakers, fractures or metal contents are not allowed to use. Specifications: Material: ABS + silica gel Product mode: 4 Product diameter: 100 mm Product weight: 360g Product color: blue, black, rose red, black (black ring), pink, purple, green Product operation: USB charging Product battery: dc3.7v, 2400mAh Product appearance: 100% waterproof Product configuration: fascia ball + data line + manual + packing box Package Included: 1*Fascia ball Notes: 1-2cm error might exist due to manual measurements, please kindly understand. The colors deviation might differ due to different monitor settings. We provide you with the best product and service. If you have any problem, please let us know, and we will solve the problem ASAP. Thank you so much.