Efficacy: This sleep aid device can relieve anxiety, improve insomnia, and help you sleep.The perception of the product's vibration frequency may vary from person to person. If you are dissatisfied with any aspect of the product, please contact our customer service staff. Easy to use: The design with a display makes it easier to adjust the gear that suits you through buttons Occasion: It can be used at home, in the office, on business trips, or traveling Design: The strap design can prevent the sleep device from falling off during sleep Portable: This sleep machine is small and easy to carry, and it uses USB charging and can be used at any time Legal Disclaimer Statements regarding dietary supplements have not been evaluated by the FDA and are not intended to diagnose, treat, cure, or prevent any disease or health condition.