vivoactive 6
Garmin vivoactive 6 is a watch from 2025, sitting in the budget band at an indicative $299.
It reads 15 of the 33 signals this comparison tracks. Nothing at all from body composition. Rarer readings it does take: Body Battery.
By sensor class: 10 at high accuracy and 3 at consumer grade. That grade is my classification of the hardware, not a lab test. Those readings come from an optical heart rate sensor, an optical blood oxygen sensor, a GPS receiver and an accelerometer. Blood oxygen is a spot reading you take yourself, not a continuous one.
Its 11 days per charge are the 57th longest of the 80 devices of its kind here that publish a figure. The AMOLED screen can stay always on. Built-in GPS. Rated 5ATM / 50m, fine for swimming. It weighs 23 g. On top of the tracking it also handles music on the device and contactless payments. Case size 42mm. No subscription is required.
April 2025 successor to the vivoactive 5, same measured signals. Still no barometer, so no floors, and no Training Readiness.
Key specs
What it tracks
Heart & vitals
Sleep
Activity
Fitness
Sources
https://www.garmin.com/en-US/p/vivoactive-6/https://www.dcrainmaker.com/2025/04/garmin-vivoactive-6-in-depth-review.html
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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