Features: *High-quality material: This sleep aid is made of high-quality material, which is wear-resistant and durable, not easy to be damageds, and can be used for a long time. *Exquisite workmanship: This tool has exquisite workmanship and excellent material, which can bring you a good use experience. *Portable: This sleep aid is light in weight, small in size, and is designed with a hanging rings for hanging a rope, making it easy to carry, so it can be used in the office, home, and on business trips. *Relieve insomnia: This sleep aid device can help people with sleep deprivation and insomnia fall asleep as soon as possible. It also has the functions of relieving migraines, relieving anxiety, and releasing stress. *Adjustable gears: This sleep aid is designed with three levels of intensitys, which can adjust the frequency according to individual needs without irritating the skin. Notice: 1.Actual color may be slightly different from the image due to different light effect 2.Please allow 1-3cm deviation due to manual measurement Description: Material: ABS Size: 43.2*39.3*11.4mm Power supply mode: button battery Working current: 0.5-2.4mA Power: 0.01W Package List: 1 x Sleep Aid Device