This is the device that uses electronic muscle stimulation (EMS) and red light therapy to help firm the chin and neck. Employing clinical technology used by physical therapists for rebuilding atrophied and weakened muscles, it delivers a painless electrical pulse to your facial muscles to rhythmically contract and release, boosting their tone. Its medical-grade LEDs emit deep-penetrating red light that stimulates collagen production and repairs damaged tissue. With nine strength settings and five patterns. The unit secures around the head with an adjustable strap and comes with a remote control. Charges via USB; remote powered by included button cell battery. Not for use by those with a pacemaker.