FAQ
- What types of sports can heart rate sensors be used in?
- How to maintain the H303?
- Can H303 test resting heart rate?
- Why do I still have heart rate data after taking off the heart rate monitor?
- Why is the heart rate data of the H603 larger than that of a smartwatch?
- Why does the heart rate sensor have a large and drastic change in heart rate data when it is just worn on the body?