Index S2
Garmin Index S2 is a scale from 2021, sitting in the mid-range band at an indicative $199.
It reads 5 of the 33 signals this comparison tracks. Nothing at all from heart and vitals, sleep, activity and fitness. Rarer readings it does take: bone mass, hydration, muscle mass and weight.
By sensor class: 2 at consumer grade. That grade is my classification of the hardware, not a lab test. Those readings come from bioimpedance electrodes.
It has an LCD screen. No subscription is required.
Wi-Fi body-composition scale; BIA weight/BMI/body fat/muscle/water/bone.
Key specs
What it tracks
Body composition
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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