Description: - Using this product can stimulate the neurotransmitter of the cerebral cortex through micro-current to regulate emotions, thereby promoting sleep, when the hand is properly stimulated, so that the feeling of can be calmed by the same frequency of the hand and brain. - 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 charging, can be connected to the computer's USB port, mobile power, power supply and other charging methods, and the battery life is long. - Suitable for people with , overthinking, etc. Small and convenient, you can carry it with you. Specification: - Material: ABS stainless steel - Size: Approx. 38.5 x 40.5 x 68.5mm 1.5x1.6x2.7 inch - net weight: 38g - Battery capacity: 500mAh - Input voltage: DC 5V 1A - Working power: 0.5W - Charging port: USB Package Includes: 1 Sleep aid Device 1 Charging cable 1 Manual : Put the front of the product completely on the palm of your hand. Turning the top button away from OFF is the low-frequency decompression mode, which is recommended for left-handed use. Pressing M again is the high-frequency encouragement mode, which is recommended for the right hand. Power to the right increases, power to the left decreases Turn the top button to OFF to shut down.Suitable for people with , overthinking, etc. Small and convenient, you can carry it with you. Adopts a simple oval design with a new matte texture, which conforms to the design of people's hand grip, simple and comfortable. Using this product can stimulate the neurotransmitter of the cerebral cortex through micro-current to regulate emotions, thereby promoting sleep, when the hand is properly stimulated, so that the feeling of can be calmed by the same frequency of the hand and brain. Round button design, one button to turn on, adjust the power supply. Fall asleep easily every day. USB charging, can be connected to the computer's USB port, mobile power, power supply and other charging methods, and the battery life is long.