7/24 HR Monitor,Blood Pressure & Blood Oxygen Monitor with All-day Activity Tracking You can monitor your heart rate 24 hours a day, and you can also measure blood pressure and blood oxygen anytime, anywhere. Blood oxygen data can be used to judge whether the body’s metabolic function is good.
https://www.amazon.com/Pressure-Waterproof-Pedometer-Smartwatch-Forecast/dp/B0885TN7SX