LETSCOM Smart Watch Fitness Tracker Heart Rate Monitor Step Calorie Counter Sleep Monitor December 31, 2017May 5, 2020Timothy Perry 0 LETSCOM Smart Watch Fitness Tracker Heart Rate Monitor 36.00 6.5 Effectiveness 8.0/10 Healthiness 8.0/10 Affordability 8.0/10 Ease Of Use 2.0/10 Pros Heart-rate monitoring Sleep Monitoring Water resistant Long Battery Life Large Stylish Dial Display Cons Unclear whether apps tracks heart-rate over time See more on Amazon.com Fitness trackers allow POTS patients to track their vitals throughout the day and over time.