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 inches 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 , 1200N, 1250N, 1300N, 1350N, 1400N, 1450N, 1500N Five gears of the beat frequency adjustable: low, medium, high, super high, frequency conversion Function: 1. Body massage: provide stable and strong force, more effective and pleasant massage, 2. It is suitable for scoliosis, chest and spine pain, and can be used for joint relief, cervical spine adjustment, thoracic spine massage, cervical spine massage, body massage and health care 3. The principle of body compression massage: imitate human hand massage, adjust the bones, straighten the spine, lift up immediately, get rid of pain, and make people refreshed and energetic. It may come in contact with the skin under 2.3 cm for effective adjustment of the bones and massage once for longer relaxation time. Provides stable and powerful strength, more effective and more comfortable Package list: 1 x Electric Massage Gun 8 x physiotherapy head 1 x English manual 1 x storage box