Smartwatches Screen for Sleep Apnea, Not a Diagnosis

Some wearables, notably Apple Watch and Samsung Galaxy Watch, can screen for signs of sleep apnea (not diagnose it) using sensors and require setup with multiple nights of data; Withings' ScanWatch has FDA clearance for breathing disturbances but isn't marketed as a sleep-apnea alert; Garmin and Oura track breathing without FDA clearance; Fitbit and Whoop lack FDA-cleared respiratory features. If screening suggests apnea, see a doctor for evaluation.