Pendant Neck Protector Cervical Spine Massager Cervical Spine Physiotherapy Device Shoulder MassagerFeatures:Five massage modes b Press the mode button for 2 seconds to turn on the power, the power indicator lights up, the think automatic combination mode intensity is 1 gear. Press and hold the mode button for 2 seconds to shut down, and the power indicator will turn off. Click the key or mode key to the mode, the modes are kneading mode, hammering mode, acupuncture mode, massage mode, and automatic combination mode. After switching, the think strength is 1 block. Each time you press the intensity "and" button to increase the intensity by 1 gear, and finally to the 9th gear Product A tingling sensation may be due to:Is the electrode pads close to the neck skin Need to adjust the position to make it close to the skin.Is the massage time too long It is recommended to press once for 15 minutes, a dayIs the massage too strong Is the skin allergic to the electrode pads Severe allergies require desensitization first Cold climate, dry skin Use after moistening the skin with a damp towel. Whether there is a wound on the skin surface, do not put the electrode pad on the wound for massage.The use of the following conditions is prohibited1. Patients with malignant2. Patients with bleeding tendency3. Pregnant women, maternity4. Patients with acute suppurative inflammation6. Patients with metal implants7. Near the heart of the human bodyContains: 1X Neck Massager1USB