?Usage Safty Tips?The neck massager is equipped with a 15-minute auto-off function to ensure you have a safe massage experience. If YOUR NECK IS DRY, please wipe neck with a wet towel before use and get better use experience. Notice: This neck massager uses electrical impulses therapy. Do not use when implantation of pacemakers or carrying metal in the body is prohibited. ?EASY TO USE -3 Modes + 15 Levels of Intensive?Keep pressing the switch button for 2 seconds to start, 3 massage modes(acupuncture/knock/massage mode), 15 intensity(+/-) and heat function adjustments on the remote control, handy to pick the modes you like for comfortable massage. Cervical neck massager also comes with a USB charging cable, convenient for you using it at anytime anywhere. ?NECK MASSAGER FOR PAIN RELIEF?This smart neck massager uses electrical impulses transmitted to deep skin, and use electrical impulses simulation variety of massages to achieve deep relaxation of cervical spine. Due to the use electrical impulses therapy, when you use the massager, you may feel an electric shock. This is normal, it's can relax muscles deeper than traditional massage. ?BREATHABLE & PORTABLE?Intelligent neck massager is lightweight and portable, handy to carry it with you at home, office, car, gym and travel. Compact fashion design, excellent for you wearing this massager on your way to shopping, running, reading, etc. ?ERGONOMIC DESIGN?Electric pulse neck massager is with U shape design, made of breathable soft silicone material, perfectly fits for human neck skin, provides comfortable touching for relieve and relax pain, stiff and fatigue of cervical muscles, improve sleep quality and promote blood circulation.