Garmin connect heart rate zones went crazy after I accepted new running threshold after a 10 mile long run. Fenix 7x via garmin's HRM. : r/Garmin
Amazon.com: Garmin Fenix 6X Pro Solar, Premium Multisport GPS Watch, Dark Gray with Black Band & HRM-Pro, Premium Heart Rate Monitor Chest Strap, Real-Time Heart Rate Data and Running Dynamics, Black :
Amazon.com: Garmin Fenix 6X Sapphire, Premium Multisport GPS Watch & HRM-Pro, Premium Heart Rate Monitor Chest Strap, Real-Time Heart Rate Data and Running Dynamics, Black : Electronics
Review: Garmin Fenix 6 Pro Solar | road.cc
Garmin Fenix 6 Pro Solar Edition GPS smartwatch review - Smartwatches - Gadgets - BikeRadar
Garmin Fenix 6 Pro HRM with GPS Multisport Watch - Black