Features1. Relaxation and portability: This smart handheld sleep monitor is designed to help those who experience sleep deprivation and insomnia relax their bodies. It is lightweight, compact in size, and easy to carry, making it suitable for use in various environments such as offices, homes, and business trips. In addition, its USB charging function has added convenience.2. Two frequency modes: Our sleep aid provides two modes to meet different needs. Low frequency mode provides gentle relaxation for the body and mind, while high frequency mode provides excitement. The device is designed to be held in low-frequency mode on the left palm and in high-frequency mode on the right palm.3. Important instructions and simple operation: The sleep aid should stop after running for 15 minutes to prevent continuous use. To restart, simply close it and then open it again. Adjust the strength and handle position according to personal preferences to achieve the most comfortable level.4. Effectiveness: Users may need some time to adapt to the device and experience relaxation. We suggest using a sleep monitor continuously for more than a week to help the body adapt.5. Calm experience: Use our device to relax and prepare for sleep by gently touching the palm of the hand with a metal rod, diverting attention, relaxing the body and mind, creating a peaceful environment conducive to sleep.SpecificationMaterial: ABS+Stainless steelColor: BlueSize: 6.5 x 3.9 x 3.7 cmWeight: 55 gPackage Include:1x Intelligent handheld sleep monitor