Recommended reason
24 hours PER sec sustained heart rate monitoring--UPGRADED fitness tracker can support 24 hours per second to monitor your heart rate, different from the past monitoring per...
Read More
Recommended reason
24 hours PER sec sustained heart rate monitoring--UPGRADED fitness tracker can support 24 hours per second to monitor your heart rate, different from the past monitoring per hour; Monitoring your heart rate to help you do exercise scientifically and help you get a better...
Read More