Product Details Features:1. Comfortable Use: The head massager works by mimicking human fingers to help quickly reduce soreness and stiffness. massage stimulation will increase blood flow to help tone and soften skin.2. Ergonomic design: The head massage device conforms to an ergonomic design, and has a unique anti-slip thread, increasing friction so that you can better hold it when using, preventing it from slipping.Description:Increase blood circulation to the scalp, boosting hair growth, promoting relaxation, releasing stress, and relieving sores.Specifications:Material: ABSColor: pinkSize: 115x63x65mmVoltage: 5VPower: by 2 x AAA batteries(not included)