Features: Sleep Aid Device: Sleep aid for adult, the device is made of very smooth material, with anti-drop belt, using micro-current technology hand-brain linkage, can be adjusted according to different people. Daily relaxation, easier to enter deep sleep. Handheld Sleep Device: Suitable for people who are sleep deprived and in a bad mood. It only takes 20min to relax through the low frequency pattern, our pulse stimulation, can optimize your sleep pattern. Calming Device: Good to help you calm down, calm the mind and relax the body to sleep. When using this device, the metal bar touches the palm of your hand hand-brain linkage attention shifting to ease your mind and calm your body. Concentration: This product can also focus attention. Use the frequency mode sleep aid in the office or study area, the right hand can help you focus more on what is important and complete your work efficiently. Satisfaction Guarantee: We strive to provide each customer with the est standard of customer service to ensure you have a pleasant shopping experience. If you have any issues, inquiries or need assistance, please feel free to contact us directly. 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. Description: Power Supply Mode: Usb Function: Timing Control Method: Mechanical Working Principle: Micro Current Include: 1X Microcurrent Sleep Helper 1X USB Cable