This is an infrared smart anti snoring device. It can effectively help you reduce snores while sleeping, providing a good quality sleep experience. An effective solution to eliminate snores. Both the wearer and the roommate can enjoy a quiet night and good sleep. Features: Reduce snores while sleeping and improve sleep quality. Automatic work and easy to operate. Unique designed biosensor for automatically detects snoring. Utilizes the body s natural biofeedback mechanism by stimulating the nerves in the wrist area. Nerve stimulation trains the user to reflexively reduce snore frequency and volume. Stimulation does not disturb or wake the user from normal sleep. Wristband appearance design, very comfortable to wear. No harmful side-effects, non-invasive method. Power-saving function, it will automatically power off after 8 hours using. An effective solution to eliminating snores, providing both the wearer and the roommate a quiet night and good sleep. Specifications: Output intensity: 180uA Serving time: 8 hours(automatic off) Power supply: 1 x 1.5V AAA battery (Not included) Operating environment: 10 celsius and40 celsius , 30 85percent RH Preserve environment: -20 celsius and50 celsius , 10 95percent RH Transmission environment: -10 celsius and50 celsius , 30 85percent RH Package weight: approx. 50g / 1.76ounce Package size: approx. 100 x 75 x 22mm / 3.94 x 2.95 x 0.87in Package includes: 1 x Snore Stopper 1 x Wristband 1 x Conductive Paste 1 x Screwdriver 1 x User Manual(English)