CycleOps PowerCal

Jun 1, 2012
Outside Magazine
PowerCal power meter

PowerCal power meter    Photo: Inga Hendrickson

Using a series of algorithms CycleOps created after evaluating thousands of riders’ data files, the PowerCal extrapolates your power output from your heart rate. It’s approximately 10 percent less accurate than hub- or crank-based systems, but it also comes at a fraction of the cost.

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