How Wearable Tech Measures Blood Pressure Without a Cuff

A look at how smartwatches and fitness bands are beginning to track blood pressure without a traditional inflatable cuff. We break down the technology behind it—pulse transit time and optical sensors—and discuss the accuracy trade-offs. A 2025 study from the University of Tokyo found that the Samsung Galaxy Watch's cuffless BP readings were within 5 mmHg of a standard arm cuff 90% of the time. But calibration is still required monthly, a friction point that limits adoption. With 1.28 billion adults living with hypertension globally, cuffless monitoring could transform how we manage the silent killer. But is it ready for prime time? Lucas and Luna explore the promise and the pitfalls of this emerging wearable feature. #WearableTech #BloodPressure #SmartwatchHealth #CufflessBP #Hypertension #SamsungGalaxyWatch #PulseTransitTime #Photoplethysmography #HealthMonitoring #MedicalTech #FitnessTracker #TechPodcast #FexingoBusiness #BusinessPodcast #WearableInnovation #DigitalHealth #HeartHealth #SensorTechnology Keep every episode free: buymeacoffee.com/fexingo