Compact and portable, this USB rechargeable device is designed for repeated use. Key benefits Portable and easy to carry: small form factor you can keep with you for onthego use. USB charging and reusable: convenient power options and longterm usability. Adjustable microfrequency: multiple levels to tailor support to your needs. Low frequency helps soothe and relieve anxiety. frequency provides a more stimulating and encouraging signal. How it works Microcurrent stimulation: the device delivers microcurrents that stimulate neurotransmitters in the cerebral cortex to help regulate emotion and support better sleep. What it is suitable for People dealing with stress, anxiety, depression, sleeplessness, or mood fluctuations. Usage and scenarios Evening routine: use before bed to help calm the mind and support more restful sleep. Workplace or study moments: brief sessions to reduce stress, improve focus, and maintain mood balance. Mood support: during low mood periods, select a higher frequency to provide gentle encouragement and motivation. Specifications and compatibility Size: compact for easy portability. Power: USB charging for compatibility with standard USB sources (computer, power bank, USB wall charger). Reusability: designed for repeated use. Note: The description reflects the product's stated functions and applications, without added details beyond the original specifications.