With Lifelong Massage gun helps for relieves tight muscles, eliminates soreness and stiff, promote blood circulation, improve the health of the body's soft tissues, effectively relax the body quickly and maintain health. It can save the cost of "pricey physical therapy". You can enjoy it at home anytime, anywhere. With 4 interchangeable heads, each targeting muscle groups, this massager vibration machine provides a deep muscle treatment for your entire body. Flat Head: It is suitable for relaxation and shaping of various muscle parts, Ball Head: Suitable for massaging all muscle parts, such as palms, soles, Head: It is applicable to impact deep tissues, such as meridian joints, U-Head: Apply to massage the neck and Achilles tendon of spine. The Gun Massager comes with 4 Intensity levels. The Lifelong Massager Gun comes with a powerful 2000 mAH Rechargeable Lithium-Ion Battery which can last up to 4 hours, with 2 hours of charging.