Feature 1.High frequency mute: noise reduction design, 0-20 decibels, very quiet, almost no sound2.Lightweight and comfortable: 170G, light and thin, more comfortable to wear3.Full silicone bracket: softer, less pressure, neck size fits4.Micro-curved surface design: ergonomic design, fits the skin surface5.Soft silicone inner arm pad: skin-friendly soft silicone inner arm pad6.Intelligent voice broadcast: intelligent voice broadcast in real time, care about you everywhere, easier to use7.Strong endurance: built-in lithium battery, USB charging, one charge, 30 minutes of daily use, 15 days of sustainable use, long battery life.8.TENS pulse massage: -frequency pulsed electromagnetic current is conducted to the skin, and by activating the cells of the human body, it prevents soreness caused by muscle stiffness.9.Warm care at 38~45: like a towel on your shoulders and neck, breakthrough compress temperature setting10.4 modes: Automatic mode,acupuncture mode,hammer mode,kneading mode11.15-speed Intensity adjustment, 6-head massage: accurately cover the 4-7th cervical spine peripheral massage, just cover the common pain area of the cervical spine. People who should not use this product 1.People who are undergoing disease treatment or those with obvious physical discomfort must consult a doctor before use2.Take care of children to ensure that they do not play with this product.3.The product has a surface, so people who are not sensitive to heat must pay attention to it when using it.4.Patients with allergic constitution heart disease and other people with electronic devices in their bodies should be used with caution5.This product is not intended to be used by someone,including children who are physically impaired, sensory or mentally impaired, or who lack6.elevant experience and knowledge