WatchPAT® is a fantastic Home Sleep Apnea Device (HSAT) that revolutionizes sleep apnea diagnosis. It utilizes the peripheral arterial signal (PAT®) to accurately assess sleep apnea. This innovative device measures multiple parameters, including PAT signal, heart rate, oximetry, actigraphy, body position, snoring, and chest motion, all with just three points of contact. Incredibly, within one minute after the study, the raw data is downloaded and automatically analyzed, identifying various types of sleep apnea events. Information can be uploaded to a certified sleep physician for analysis and treatment recommendation.