How to use Step 1: Take out the electrode pad, snap the electrode pad into the female buckle of the instrument. Step 2: Wet the forehead with water (very important). After wearing it, the edge of the product should be flush with the eyebrows. Step 3: Peel off the protective film of the electrode pad (but keep it well for repeated use), adjust headband and choose the mode and intensity you need. Features: Use TSNS to stimulate waves, increase endorphin secretion, and block the transmission of pain nerves. Achieve easy and painful effects at the same time, it can slow down tension, anxiety and other emotions. Help patients get quality sleep. TSNS therapy, sleep instrument, physical therapy without drug side effects. Stay away from drugs and easily heal. It plays a role in head-mounted devices, avoids drug dependence and side effects, is economical and practical, and has a small patient burden. Beautiful body, comfortable and skin-friendly experience. Beautiful and scientific, in line with the head curve. Ergonomically designed for a variety of face types. NOTE: 1.Do not use it with other medical electronic devices, such as cardiac pacemakers, artificial heart and lungs and other life-sustaining medical electronic devices, otherwise it will cause danger. 2. Pregnant women, people with sensitive skin, heart disease, abnormal blood pressure, malignant tumor, cerebrovascular patients, acutely ill patients or others who are receiving doctors. The treatment person should consult a doctor before using this product. Specifications: Type: sleep aid Material: ABS and elastic band Fully charged time: about 20 times (15 minutes each time) Charging output interface: standard V8 interface Power mode: USB Charging input voltage or current: 5.0 0.2V or 1 80mA 30mA Charging time: 1-2 hours (about 2 hours) Built-in battery specifications: 200mA or 3.7V Size: 145x50x38mm Charging method: USB cable Model Number: head massager Feature2: forehead massage Feature4: Promote sleep Feature6: Health Care Feature8: Massage helmet Item Type: Massage and Relaxation Feature1: head massage Feature3: sleep aid Feature5: relieve fatigue Feature7: Electric Massager Feature9: Electrotherapy apparatus Package Includes: 1 x sleep aid device Instructions: 1. Mount the patch on the massager 2. Press the product for 3 seconds to start the product 3. Increase gear start 4. Wearing products