1.MAINTENANCE: Made with high-quality materials, our head massager is durable and easy to clean. Use a soft and slightly damp cloth to wipe. Please note that the massager must be charged using the USB data cable in our packaging box to avoid battery damage due to voltage problems. If the battery is damaged due to improper charging, our company will not repair or replace it. 2.INSTRUCTIONS FOR USE: 1. Press the power switch to start work, 3 steps strength, choose your favorite mode, continue pressing the switch to stop it; 2. The machine will automatically shut down after 10 minutes of continuous work. 3.FULLY RELAXING: Experience the ultimate relaxation with our cordless portable head massager. Let the 12 prongs gently massage your scalp, providing stress relief and promoting better sleep. The soft rubber beads and prongs provide a soothing massage that will leave you feeling refreshed. 4.WELL-DESIGNED: The massager's shape and elastic prongs gently move across your scalp, stimulating the brain and neck for a truly invigorating experience. The gentle massage will spread a sense of calm throughout your whole body, leaving you feeling good and ready to take on the day.