There are already plenty of smartwatches that can give you fairly accurate heart rate readings. The YHE BP Doctor takes it to the next level. It comes with an inflatable cuff in its band to take accurate blood pressure readings (systolic and diastolic). Its app shows your BP trends, so you can keep a close eye on your health.
BP Doctor provides users with heart rate variability analysis. You can review your heart health index to determine your fitness level and health. The device is also a fitness tracker ready for heart rate zone training.[where to find it]