Unique designed biosensor for automatically detects snoring. Utilizes the bodyu0026#39;s natural biofeedback mechanism by stimulating the nerves in the wrist area. Nerve stimulation trains the user to reflexively reduce snore frequency and volumeUsers experience no harmful side-effects, non-invasive method.ntimulation does not disturb or wake the user from normal sleep. Reduce snoring frequency and volume without disturbing normal sleeping. Wristband designed for maximum comfort and convenience. Powered by 1 AAA battery(not include).nMaterial: ABS Output intensity: 180up Main output form: 0.2HZ fixed The output waveform: fixed number of square wave output Service time 8 hours(automatic off) Color: Black Weight: 42g Size: 6x5x1.5cm Package Content: 1 x Anti Snore Wrist 1 x Self-adhesive electrodes 1 x Screwdriver 1 x User manual(English/Chinese)