is made of breathable soft silicone material, perfectly fits the human neck skin, offers comfortable touch to relieve and relax pain, stiffness and fatigue of the neck muscles, improve the quality of sleep and promote sleep the blood circulation. to take with you at home, office, car, gym and when traveling. Compact fashion design, great for you when you carry this massager on your way to shopping, running, reading, etc. that are transmitted to the deep skin and simulates various massages with electrical impulses to achieve deep relaxation of the cervical spine. Due to the use of electrical pulse therapy, an electric shock may occur when using the massager. This is normal, it can relax muscles more deeply than traditional massage. Press and hold the switch button for 2 seconds to start. 3 massage modes (acupuncture / tapping / massage mode), 15 intensity (+/-) and heat function settings on the remote control are convenient to choose the modes you want pleasant massage. The neck massager also comes with a USB charging cable so you can use it anytime, anywhere. Please do not use the neck massager for more than 15 minutes to cause muscle fatigue or physical discomfort. If your neck skin is dry, wipe your neck with a damp towel before use for better application. Note: This neck massager uses electrical pulse therapy. Do not use if pacemaker implantation or metal wearing is prohibited.