Round L13 Heart Rate ECG Blood-Pressure Blood-Oxygen Monitoring BT Call Waterproof Smartwatch

features 1.3-inch screen, heart rate, blood-pressure, sleep quality monitor, waterproof, and some other advantages. It's not only a smartwatch, but also a bodyguard.
Features:
Real-time heart rate monitoring for cycling, running and fitness, a nice supervisor to help you overcome plateaus and crush goals.
It can make calls and listen to music directly through BT, liberating your hands，making your communication more free.
It can even automatically to monitor the quality of your sleep, in order to help you get better sleep.
The use of waterproof horn, direct soaking water is no problem.
Lithium-ion cell is used to achieve lower consumption calculation, and the using of cell can reach 2-5 days.