Everfit Massage Gun 30 Speed 8 Heads Chargeable BlackWhether you're a hard core gym junkie, a dedicated office worker or recovering from an injury, you'll find relief with an Everfit Massage Gun. With a powerful brushless motor, the massage gun allows for high frequency vibration at 2400 strokes per minute and penetrates deeply for muscle relaxation from the comfort of home. The massage gun uses long lasting and efficient rechargeable lithium batteries that allow the gun to run for up to two hours.