specification: Item Type: Electric Correction Gun_x000D_Material: ABS_x000D_Strength: 9 gears_x000D_Frequency: 3 gears_x000D__x000D_Efficacy: _x000D_1. Body massage: provide stable and powerful force, more effective and comfortable massage._x000D_2. It is suitable for scoliosis, thoracic and spine soreness, and can be used for joint relief, cervical spine adjustment, thoracic spine massage, cervical spine massage, body massage and health care._x000D_3. The principle of physical pressure massage: imitate human hand massage, adjust bones, straighten the spine, immediately dredge upright, get rid of pain, and make people refreshed and energetic. It can be in contact with the skin under 2.3cm to effectively adjust the bones and massage once to make the relaxation time longer. Will provide stable and powerful strength, more effective and more comfortable._x000D__x000D_Applicable Symptoms:_x000D_1. Cervical syndrome: headache, dizziness, insomnia, limited neck mobility, neck pain, arm numbness, neck ovement disorder._x000D_2. Thoracic syndrome: back pain, shortness of breath, poor appetite, gastrointestinal disorders._x000D_3. Lumbar syndrome: acute and chronic low back pain, lumbar disc herniation, legs and feet numb._x000D_4. Pelvic syndrome: sacroiliac joint subluxation, sciatica, toe feet._x000D_5. Scoliosis: the prevention of regressive lesions of the conventional spine health._x000D__x000D_Contraindication_x000D_1. The eyes and the surrounding area, the myocardium, the spinal cord, the gonads, the kidneys and the liver. _x000D_2. Blood disorders, coagulation problems or the use of anticoagulants. _x000D_3. Polypus in the area of treatment. _x000D_4. Thrombosis. _x000D_5. Tumor diseases._x000D_6. Polyneuropathy. _x000D_7. Growing cartilage in children. _x000D_8. Therapy using corticoids. _x000D_9. Inapplicable on areas in proximity to large nerve bundles, bundles, blood vessels, the spinal cord and the head._x000D_10. Heart disease, diabetes, pregnant women, and other major diseases. Features: 1Can adjust 9 gears of strength: 100?200?300?400?500?600?700?800?900N, with 6 replaceable physiotherapy heads that can be used to treat different parts of the body, which can meet your various needs. 2Built?in high frequency cooling fan can cool the machine so that it would not be too hot which can extended service life and greatly improved the safety index. 3Imitate human hand massage, provide stable and powerful strength, more effective and comfortable massage, adjust bones, straighten the spine, straighten up immediately, get rid of pain, make people refreshed and energetic. 4Stimulating the normal function of nerve cells and organs, so that the body can quickly recover and adapt to so many syndromes such as the cervical syndrome, thoracic syndrome, lumbar syndrome, pelvic syndrome and scoliosis. 5Suitable for scoliosis, thoracic and spine soreness. It can be used for joint relief, cervical spine adjustment, thoracic spondylosis, cervical spondylosis, body treatment, contact with skin below 2.3cm, effectively adjust the bones, massage once, and make the relaxation time longer. PackageList: 1 x Electric Spine Massager 6 x Physiotherapy Heads 4 x Protective Covers 4 x Gum Covers 1 x English Manual