How accurate is the forerunner 235 HR sensor? Regularly hit 30 then just get -- in the mornings, is this normal or is the 235 known to read low? TIA : r/Garmin
Garmin Forerunner 235 HR Noire et Grise - 010-03717-55 - Multisports Watches and Outdoor GPS - IceOptic
How To Setup The Heart Rate Monitor On The Garmin Forerunner 230 ! FEATURE REVIEW ! - YouTube