1Four modes (automatic combination, beating, scraping, acupuncture) simulation human massage techniques. 2Constant temperature hot compress, warm care relieve cervical stiffness, accelerate blood circulation, easily remove cervical fatigue. 3Portable and compact, remote control operation, provide comfortable massage experience and easy control the strength. 4Ergonomic design, Ushaped traction arm, seamless fitting neck skin, suitable for all kinds of neck circumference. 5Powerful relief of cervical pain, suitable for sedentary office workers, people playing games for a long time and so on. Item Type: Neck Massager Material: Stainless SteelApplicable People: Sedentary office, lower the head of learning, games playing, feeling tired Host Power Supply Mode: Lithium battery Battery Capacity: 1200mAh (built-in) Remote Control: 1pc CR2032 button battery Battery Capacity: 240mAh (Not included) Not Suitable: 1. Implantable electronic devices, such as cardiac pacemakers are in the body. 2. There are electrocardiograph and other electronic instruments within 1 meter nearby. Can cause these electronic devices to misbehave, which can be life-threatening. 3. Do not use it when driving, otherwise it may cause misaction due to excessive stimulation and lead to accidents. 4. Gas stations, high-dust workshops and other flammable and explosive sites are prohibited. Prohibited to use under the following circumstances: 1. Patients with malignant tumors. 2.Patients with bleeding tendency. 3. Patients with acute suppurative inflammation. 4. Pregnant women and parturient women. 5. Children may not be able to express consciousness. 6. Patients with skin perception disorder or skin abnormality. 7. Patients with abnormal heart and brain nerves. 8. Patients with abnormal blood pressure. 9. Patients who are being treated by doctors and feel abnormal. 10. Patients with a body temperature over 38 degrees Celsius (febrile phase). 11. Patients with infectious diseases. 12. Patients taking medication. 13. Patients with skin allergy to stainless steel electrodes. 14. Users who are insensitive to heat or prone to heat allergy. Operation mode: 1. Before use, first wet the skin of the cervical spine with a wet towel, then put the product on the neck, make the electrode close to the skin of the cervical spine, adjust the position of the product, open the product and adjust the appropriate massage mode and strength. 2. Long press the product power switch for two seconds, the product starts up, hear "beep" sound, the indicator light, enter strength 1.Long press the product power for two seconds in the startup state, and the product will be turned off after two "beep" sounds. 3. There are 4 modes of electric shock pulse: "automatic combination mode", "beating mode", "scraping mode" and "acupuncture mode", and the 4 modes can be switched circulatively.The remote control M is the mode switch button. Press it once, with the sound of "beep", the mode will be switched once. The default regression strength will be 1 for each mode switch 4. Modes (strength) selection 4. 1. The "+" button of the remote control is to strengthen the power button.