This sleep instrument uses EMS micro-current to help you fall asleep easily and quickly, reduce stress and get better sleep quality. It has two modes, sleep mode and excitement mode, and the intensity of 15 gears can be adjusted to meet the needs of different people. The device is made of ABS plastic and stainless steel, and is suitable for people who are stressed, easily anxious and depressed, have difficulty falling asleep and easily wake up in the middle of the night.