Feature:   1. Improve joint pain, spasm and other symptoms, care for your health.     2. Correction of spine, treatment of cervical spondylosis, thoracic vertebra disease, lumbar disc herniation.     3. Can be used for body shaping, improve hunchback, torticollis, hip, etc.     4. Delay bone aging. Built-in high frequency cooling fan, to extend the service life, with 9 levels can be adjusted.     5. Four types of massage heads are replaceable, meet your needs.             Specification:                 Condition: 100% Brand New       Item Type: Electric Correction Gun            Material: ABS + Stainless Steel              Input Voltage: AC110V~AC220V       Input Current: Maximum<3A       Output Strength: 50N-750N- stepless smoothly transition adjustment       Output Frequency: 1HZ-12H2 stepless smoothly transition adjustment       Average Output Power: 65W       Working Head Output Stroke: Original stroke 5MM+ adjustable stroke 17.5mm = maximum 22.5mm       Nine levels are adjustable                        Package List:   1 x           Electric Correction Gun         4 x Massage Head               2 x Replacement Silicone