As for chest sensors, the 55 supports HRM-Pro as heart rate and speed and distance sensor, HRM-DUO as heart rate. I have an HRM-DUO. I like to run with it, heart rate accuracy is good, and the watch gives real-time control of both heart rate and pace and many more parameters. Garmin Connect is a handy thing for storing the history of activities.
The Best Chest Strap: POLAR H10 Heart Rate Monitor Chest Strap. 4. The Best Battery Life: Wahoo Fitness TICKR FIT Heart Rate Monitor Armband. 5. The Best Smartwatch With ANT+: Garmin fēnix 5
The Venu® 2 Plus watch has a wrist-based heart rate monitor and is also compatible with chest heart rate monitors (sold separately). You can view heart rate data on the heart rate glance. If both wrist-based heart rate and chest heart rate data are available when you start an activity, your watch uses the chest heart rate data. Wrist-based
