Describe 100 brand new Specification Material: ABS Size: 10*7*3CM Colour: Black Power supply: AAA battery (not included) Features Reduce the frequency and intensity of snoring Reduce the incidence of temporary respiratory diseases Increase the tone of the respiratory organs Greatly improve the patient's sleep quality (over 90% efficiency) Automatic shutdown after 8 hours Infrared smart process reduces snoring is a revolutionary device designed to reduce snoring through a new nerve stimulation process. It features a specially designed biosensor with logic control IC When it detects snoring, it automatically sends a gentle 4-second electrical pulse to stimulate nerves in the snorer's skin. The brain then senses this neural stimulation and reminds or trains the snorer to change their sleeping position, thereby reducing snoring Comment: 1. Manual measurement tolerance is 2-5g. Please don't mind your substitutions. 2. Due to the difference between different monitors, the image may not reflect the actual color of the item. thank you very much! 3. SKU color is the color of product packaging Package Included: 1*Host 1*Screwdriver 1*Wristband 1*Instruction