10 MASSAGE HEADS & STORAGE CASE: The Massage Gun for athletes includes 10 heads allow you to reach every muscle, promoting circulation and and decompose lactic acid. Plus, the set Equipped with a portable suitcase, you can relax your muscles anytime, anywhere. LOW NOISE: The Muscle Massage Gun is equipped with the updated noise reduction technology brushless motor, which makes the noise less than 45dB when used, creating a comfortable environment. LONG BATTERY LIFE: The Deep Tissue Massage Gun Equipped with 2500mAh high-quality rechargeable lithium battery, can be continuously run for up to 4 hours. 4 ADJUSTABLE SPEED LEVELS: The Massage Gun Deep Tissue offers 4 different speed levels meet different muscle group, awake your whole body muscles, provide great deep tissue massage. The Percussion Massage Gun helps relieve fatigue, pain, muscle soreness and stiffness. Ideal for relieving shoulder, neck, waist, and back pain.