1.Stimulate neurotransmitters in the cerebral cortex through micro currents, regulate emotions and promote sleep. 2.CES effectively improves the secretion of neurotransmitters in the body. Let you sleep till dawn, create quality sleep and improve sleep quality. 3.Use physical adjustment. Non-drug, no harm, no addiction, no side effects. 4.Say goodbye to bulky traditional medical equipment. Lightweight and compact, easy to carry around. 5.It can be connected to the computer's USB port, mobile power, power supply, etc. Multiple charging methods, long standby time.