Improve joint pain, Adjust vertebration, Delay bone age. Suitable for scoliosis, thoracic spondylosis, cervical spondylosis, body treatment. Can stimulate nerve cell and the normal function of an organ resulting in rapid recovery the body function. 100‑200‑300‑400‑500‑600‑700‑800‑900N to meet your various needs, the keys are clear and easy to operate. Can contact with skin under 5cm, effectively adjust bones, ease pains, massage one time for longer time relaxing. With 8 replaceable physiotherapy heads for treating different parts of the body, easy to install and disassemble, provide stable and powerful strength, comfortable massage. High quality workmanship which can bear multiple tests, providing durable use. 304 stainless steel machine has good corrosion resistance, heat resistance, low temperature strength and mechanic performance. Lightweight, safe, durable, portable and sturdy, home treatment for everyone. 15 minutes a day reduces the tension on your neck and can be more effective than an entire chiropractic session.