How accurate is the Garmin Fenix 3 hr?
How accurate is the Garmin Fenix 3 hr? Apparently recent firmware updates have improved the accuracy. Broadly the Fenix 3 tracks acceptably. There is a brief delay over the first 500m, but then it settles down to match nicely. However there are two anomalies, a big drop, and conversely a large spike as well, neither […]