It is automatic pressure adjustment for effectiveness and comfort. Noise reduction technology for superior comfort. Keeps airway open while you sleep. Reduce or eliminate snoring altogether. It improve the quality of sleep. It reduce or eliminate daytime sleepiness, a symptom of sleep apnea (OSA). Circumvent or significantly reduce high blood pressure. Includes host machine, heated humidifier, air hose, mask and accessories, air filter, Mirco SD card and Power adapter set.