H10 Heart Rate Sensor
Polar H10 Heart Rate Sensor is a chest strap from 2017, sitting in the budget band at an indicative $89.
It reads 4 of the 33 signals this comparison tracks. Nothing at all from sleep, fitness and body composition.
By sensor class: 3 at high accuracy and 1 at consumer grade. That grade is my classification of the hardware, not a lab test. Those readings come from ECG electrodes and an accelerometer.
Rated WR30 / 30m, fine for swimming. It weighs 21 g. No subscription is required.
Gold-standard ECG chest strap; HR + R-R for HRV apps. ECG is HR-only, not AFib.
Key specs
What it tracks
Heart & vitals
Activity
Buying for battery life? See every device ranked by battery life
Turn a supported wearable into daily health scores
MyBodyAI reads Fitbit, Oura, Polar and Withings by logging in, and Garmin from a data export, then builds daily recovery, sleep, load and immune scores, a biological age estimate, and early warnings. Optional, and separate from this comparison.
This comparison is free and ad-free. I build and update it on my own. If it saved you hours of research, a coffee genuinely makes my day.
Buy me a coffeeA shop link on this page is an affiliate link: a purchase may earn me a commission at no extra cost to you. Details