Pacer Pro
Polar Pacer Pro is a watch from 2022, sitting in the mid-range band at an indicative $349.
It reads 15 of the 33 signals this comparison tracks. Nothing at all from body composition. Rarer readings it does take: sleep efficiency.
By sensor class: 5 at high accuracy and 4 at consumer grade. That grade is my classification of the hardware, not a lab test. Those readings come from an optical heart rate sensor, a GPS receiver, a barometer and an accelerometer.
Its 7 days per charge are the 69th longest of the 80 devices of its kind here that publish a figure. The transflective MIP screen can stay always on. Built-in GPS. Rated WR50 / 50m, fine for swimming. It weighs 41 g. Case size 45mm. No subscription is required.
Lightweight runner; MIP, barometer, wrist running power; no SpO2/skin-temp/ECG.
Key specs
What it tracks
Heart & vitals
Sleep
Activity
Fitness
Buying for battery life? See every device ranked by battery life
Your wearable's data, read against your own normal
MyBodyAI reads COROS, Garmin, Oura, Polar and Withings by logging in, and Fitbit and Pixel Watch through Google Health. Older Garmin history comes from a data export. It learns how you usually sleep and what your resting heart rate usually is, and every day shows where you stand against yourself: recovery, sleep, load and immune scores, a biological age estimate and early warnings. Optional, and separate from this comparison.
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