This is a KH-740 Fascial Gun, a handheld percussion massage gun designed for deep tissue muscle relief.
It is designed to relieve muscle stiffness and pain after exercise.
The device is equipped with multiple interchangeable massage heads for targeting different muscles.
It uses 6-level variable frequency vibration.
The battery capacity is 2000 mA, offering a duration of 2 to 3 hours.
Disclaimer: This information is for general knowledge purposes. Consult a medical professional for advice regarding muscle pain, recovery, or the use of massage devices.