Specifications: Product name: Handheld night sleep aid Material: ABS plastic stainless steel process Color: white green black Battery capacity: 300mAh Working gear: 15 gears Package includes: 1 piece Handheld night sleep aid Note: 1. Please allow slight deviation in the measurement due to manual measurement. 2. Due to the different monitor and light effects, the actual color of the item may be slightly different from the color shown in the pictures.?Easy to carry? With a compact wireless design, you can use it anytime, anywhere. The lanyard can be hung on the wrist to prevent falling and breaking. ?Simple operation? The sleep aid stops after 15 minutes of operation to prevent continuous use. To restart, just turn it off and turn it on again. ?Two frequency modes? Our sleep aid offers two modes to meet different needs. The low-frequency mode provides gentle relief to the body and mind, and the device is designed to be held in the left palm in low-frequency mode and in the right palm in high-frequency mode. ?Enjoy the experience? Place the device in the palm of your hand and press it gently with your fingers. Relax your body and mind and immerse yourself in the 15-minute experience. The combination of our modes and intensity levels will bring you a unique sense of well-being and balance. ?Relaxation and Portability? Helps people with sleep deprivation and insomnia relax their bodies. It is lightweight, small, and easy to carry, suitable for use in various occasions such as office, home, and business travel.