100% brand new and high quality products. The product adopts a simple oval design with a new matte texture, which conforms to the design of people's hand grip, simple and comfortable. Round button design, one button to turn on, adjust the power supply. Fall asleep easily every day USB is convenient for charging, it can be connected to the computer's USB port, mobile power, power supply and other charging methods, and the battery life is long. Using this product can stimulate the neurotransmitter of the cerebral cortex through micro-current to regulate emotions, thereby promoting sleep. Using this product, the hand is properly stimulated, so that the feeling of anxiety can be calmed by the same frequency of the hand and brain. Small and convenient, you can carry it with you. Suitable for people with insomnia, overthinking, etc. How to use: (You can also use the product image display method) 1. Put the front of the product completely on the palm of your hand. 2. Turning the top button away from OFF is the low-frequency decompression mode, which is recommended for left-handed use. 3. Pressing M again is the high-frequency encouragement mode, which is recommended for the right hand. 4. Power to the right increases, power to the left decreases 5. Turn the top button to OFF to shut down. Specifications: Product material: ABS+stainless steel Product size: 38.5*40.5*68.5mm Product net weight: 38g Color/style: white/orange/blue Battery capacity: 500mAh Input voltage: DC 5V/1A Working power: 0.5W Charging port: Micro USB Key control method: key Product accessories: host x1, USB data cable x1, Chinese and English manual x1, certificate x1 Package Included: 1* sleep aid 1*USB data cable 1*Chinese and English manual 1*Certi