Relieve muscle stiffness, soreness, and promote blood circulation with this massage gun. The massager is equipped with 6 different shaped massage heads, which can help users relax different parts of the body. The front fork massage head is designed for the spine. The flat head is for any part of the body. The bullet head is for joints. And the round head for large muscle groups. Users can change the speed of the massage gun as needed. The wireless massage gun is equipped with a high-quality lithium battery, which can maintain about 4 to 6 hours of working time after each charge.