1. Kneading away headache pressure: Use the portable handheld controller to adjust the intensity. When you feel a headache or tightness, relax the headband appropriately or choose the right intensity for a comfortable experience. 2. FITS HEAD SIZE: To ensure the massage is in place, the product comes with an adjustable Velcro closure. The minimum head size it can accept is 21 inches, and the maximum is 28 inches. 3. D TECHNIQUE: Replicating the master technique of 'kneading, pressing, pushing and grasping', it can quickly relieve the feeling of soreness and swelling, and keep your brain away from fatigue. 4. RELIEVE FATIGUE: The 3speed warm heat compress is like wrapping a warm towel around your head, focusing on the hot compress around the eyes, relieving tension and discomfort in the head, and also relieving eye fatigue. Suitable for use when you are tired after work. You can choose according to your fatigue needs, and it is to start from the lowest temperature.