Feature: 1. Adjustable Strength with 30 Gears: The electric spine chiropractor can adjust the massage strength with 30 gears to meet your different massage needs, which is very convenient. 2. Imitation of human hand massage: The massage gun imitates human hand massage, adjusts the bones, straightens the spine, instantly clears up, eliminates pain, and makes people refreshed and energetic. 3. High-frequency cooling fan: The massage gun built-in high-frequency cooling fan can cool the machine to prolong the life of the machine. 4. Body Massage: Provides stable and powerful force, more effective and comfortable massage with 8 interchangeable physical therapy heads, used to different parts of the body. 5. Neck Syndrome: The massage gun is used to headaches, dizziness, insomnia, restricted neck movement, neck pain, numbness in arms and neck movement disorders. Specification: Item Type: Electric Spine Chiropractor Material: ABS Product Size: Approx. 20 x 15 x 5 cm / 7.87 x 5.91 x 1.97 inch 30 gears Adjustable strength: 50N, 100N, 150N, 200N, 250N, 300N, 350N, 400N, 450N, 500N, 550N, 600N, 650N, 700N, 750N, 800N, 850N, 900N, 950N, 1000N, 1050N, 1100N, 1150N, 1150N , 1200N, 1250N, 1300N, 1350N, 1400N, 1450N, 1500N Five gears of hitting frequency adjustable: low, medium, high, super high, frequency conversion Package List: 1 x electric massage gun 8 x Head 1 x English manual 1 x Storage Box