Duck! wrote:Both units were paired to common HR & cadence sensors, and achieved the same readings, as one would hope. At a little over six hours riding, both units still had some power in reserve. Although only based on one ride, the fairly substantial deviations in accuracy (~7% distance, at times ~20% speed) were a little disappointing.
If you want accurate distance/speed recording, surely you would use a speed sensor rather than rely on GPS.
The Garmin I once used (long since consigned to the rubbish bin) often reported a speed reading while I was stopped when used without a speed sensor.