Relief and fashion: this Sleep Instrument has a design that fits the human hand grip, simple and light, one button to turn on and adjust the power. Easy to enter deep sleep every day The Latest Sleep Tool: This sleep aid device mainly helps people with insufficient sleep and poor psychological quality to fall asleep as soon as possible. At the same time, it only takes 20 minutes to make you more relaxed and has the functions of relieving migraines, relieving anxiety, and releasing stress Easy to use: This sleep instrument has a long battery life. When using this product, please use your left hand to hold it handheld sleep device, so that your hand and brain can share the same frequency to relieve anxietyLength*Width*Height：25*32*70mm Volume： Weight：0.08kg Material：ABS+Stailess steel