The Oura Ring currently tracks a variety of health metrics like sleep quality, activity levels, heart rate, heart rate ...

The smartwatch features a 1.43-inch AMOLED display, providing a resolution of 466 x 466 pixels. The PPI density is 326 and it is built with an aluminum frame. Xiaomi Watch 2 comes with waterproof ...

Abstract: We describe an evaluation of photoplethysmography (PPG) signals with two wavelengths channels (infrared and red) using a wrist-worn sensor for the estimation of heart rate variability (HRV) ...

ri-vital® spot check monitor, engineered for the mobile, precise and fast recording of vital signs data at clinics, hospitals and outpatient treatments. Ergonomical design and highly developed ...