Three-head Massage Design: The massager is equipped with three massage heads, which can fully cover neck and effectively relieve neck and shoulder stiffness Three-level Constant Temperature Hot Compress: It has a three-level constant temperature hot compress function, which can be turned on separately in autumn and winter, providing warm care for cervical spine Various Massage Modes: It offers four massage modes, including circulation, kneading, acupressure, and acupuncture, to meet different massage needs Third-Pulse Technology: It adopts third-pulse technology, which can enhance performance of muscle contraction and maintain a stable and gentle pulse output, relaxing tense muscles from inside to outside Specifications: Product model: G20 Lithium battery: 1500mAh Rated power: 6W Charging voltage: DC 5V 1A Charging interface: Type-C Product size: 149.5mm*138.5mm*80mm