Features: 1.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. 2.Button design, one button to turn on, adjust the power supply. Fall asleep easily every day 3.USB is convenient for charging, it can be connected to the computers USB port, mobile power, power supply and other charging methods, and the battery life is long. 4.Using this product can stimulate the neurotransmitter of the cerebral cortex through micro-current to regulate emotions, thereby promoting sleep. 5.Best gift choice for your family/friends. Instructions: Point 1: Switch to sleep aid mode (relax) or exciting mode (active) at the bottom. Point 2: The protrusion of the electrode faces the palm of the hand, and the palm touches the periphery of the protrusion electrode to form a micro-current loop. Point 3: Turn on the side knob and gradually adjust to the gear that you are comfortable with. Notice: Actual color may be slightly different from the image due to different monitor and light effect Please allow 1-3cm deviation due to manual measurement Description: Power supply mode: USB Function: Timing Control method: mechanical Working principle: micro current includes: 1X Microcurrent Sleep Helper 1X USB Cable