Microcurrent technology supports better sleep by stimulating neurotransmitters in the brain through gentle microcurrents, helping to regulate mood and promote restful sleep. Ideal for those experiencing fatigue, irregular sleep patterns, or mental stress. Support your well-being with a compact, portable device designed for ease of use—say goodbye to bulky equipment and enjoy comfort wherever you go.This device may be beneficial for individuals dealing with occasional sleep disturbances, mental fatigue, anxiety, or mood imbalances. The relaxation mode activates the parasympathetic nervous system, promoting a calm state and peripheral blood vessel dilation, which may lead to a slight increase in hand temperature. In contrast, the stimulation mode engages the sympathetic nervous system, potentially causing mild blood vessel constriction and a decrease in hand temperature.Product Name: Sleep Aid Instrument Working Principle: EMS Microcurrent Charging Time: 60–70 minutes Battery Capacity: 400mAh Standby Time: Up to 6 months Material: ABS + Stainless Steel Charging Interface: Type-C Rated Power: 0.5W Input Voltage: DC 5V, 0.5A, 0.5W Color: Green Package Contents: 1 x Sleep Aid Instrument (built-in 400mAh battery) 1 x Data Cable 1 x User Manual (English and Chinese) Note: The color may vary slightly due to lighting and screen settings. Measurement error is +/- 1–3 cm. Product is sold as described; additional items not included.