Microcurrent improves sleep: Microcurrent stimulates the cerebral , promoting the secretion of various excitatory mediators, improving various moods and relieving anxiety and tension. 9 adjustment levels and 3 modes: Not only aids sleep, but also relieves varying levels of stress. Holding the device in your hand releases vital nerves. Simple, exquisite, and compact: The ultra-small body is ideal for travel, work, and everyday use. Say goodbye to bulky medical equipment and carry it comfortably and worry-free. TYPE-C charging mode, 500mAh battery, long standby time, and multiple charging methods for greater convenience. Advanced, clearer LCD display, ensuring seamless operation. Product Name: Sleep Monitor How it works: EMS Microcurrent Charging Time: 60-70 Minutes Standby Time: 12 Months Battery Capacity: 500 mAh Charging Method: Type-C Port Rated Power: 0.5W Input Voltage: DC 5V-2A Working Mode: Sleep/Gentle/Stimulus Working Modes: 9 Color: White Material: ABS Package Contents: 1 * Sleep Monitor 1 * Charging Cable 1 * English instruction manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.