THE ACCURACY FIX
Polar H10 Heart Rate Sensor
$ budget-friendly within watches & tech
The chest strap that heart-rate accuracy studies keep using as the reference device. Wrist-based optical sensors lag on intervals and get confused by cold weather and cadence lock; a strap does not. Pairs with basically everything. Less comfortable than nothing, more comfortable than bad data.
Best for: anyone doing interval work off heart rate
See price & details on Amazon.ca →Current price, sizes, flavours and full specs live on the Amazon listing.
Worth knowing about watches & tech
- Buy last year's model. GPS did not get meaningfully better in twelve months, but the price got meaningfully lower.
- If your heart rate data looks insane, the fix is a chest strap, not a more expensive watch.
- Do not chase your VO2max estimate. It is an algorithm's guess, and it dips every time you run in the heat.
- Tighten the watch one notch above your wrist bone before hard workouts; loose optical sensors read cadence as heart rate.
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