Is the fascia gun charged or battery

There is a battery inside the fascia gun, and we usually need to charge it without changing the battery.

The fascia gun produces 2000-3000 vibrations per minute, and helps the muscles and soft tissues to relax and recover through the gun head impacting the target part of the body, and promote blood circulation. At the same time, it effectively dissipates the large amount of creatine produced by the human body due to fatigue in exercise, work, and life, and has a very good effect of relieving body fatigue; its high-frequency oscillation effect can penetrate deep skeletal muscles and relax skeletal muscles instantly. Meridians, nerves and blood vessels flowed instantly.