Specification: Item Type: Electric Spine Chiropractor Material: ABS Voltage: 100-240V Strength setting (P+, P-): "1" = 100 N, "2" = 200 N, "3" = 300 N, "4" = 400 N, "5" = 500 N, "6" = 600 N, "7" = 700N, "8"= 800N, "9"= 900N Frequency setting (F+, F-): 1 to 9 (slow to fast) Adaptation Symptoms: 1. Neck syndrome: Headache, dizziness, insomnia, restricted neck movement, neck pain, numbness in arms and neck movement disorders. 2. Chest syndrome: back pain, shortness of breath, loss of appetite, gastrointestinal disorders, 3. Lumbar Syndrome: Acute and chronic low back pain, herniated disc, numbness in legs and feet. 4. Pelvic syndrome: subluxation of the sacroiliac joint, sciatica, toes 5. Scoliosis: Prevention of traditional degenerative diseases of the spine. Usage: 1. When using, it is forbidden to hit the gas. 2. Adjust the bottom massage head according to needs User Manual: 1. Power on. 2. Place the spine chiropractor's grip on your palm. Place the rubber tip on the body part to be hit, adjust the force and frequency, and squeeze the spinal chiropractor's wrench to begin application. 3. Use frequently, please add lubricating oil accordingly.