1. This sleep device stimulates the human body's central nervous system through pulse current to help you fall asleep quickly, reduce stress and improve sleep quality. 2. Pure physical sleep aid, scientific and healthy to improve sleep quality, non-, no side effects, no dependence, no harm to the body. 3. Our sleep aid helps to relieve mood anxiety, increase and invigorate your spirit, thus improving work and study efficiency. 4. Three modes (sleep mode/relaxation mode/refreshing mode), 6 levels of intensity adjustable, suitable for people who are under stress, prone to anxiety and depression, have difficulty falling asleep and wake up easily in the middle of the night. 5. Watch shape design, small and exquisite, beautiful and generous, easy to wear and use, so that you can enjoy high-quality sleep anytime and anywhere. Colour:Black Material:ABS Package Contents: 1 * Intelligent Sleep Device 1 * Data cable 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.