Wearable comparison / Fitbit / Google Pixel Watch 4

FITBIT

Google Pixel Watch 4

Name: Google Pixel Watch 4
Brand: Fitbit

WatchFlagshipreleased 2025

Key specs

Price

$349indicative US list price

Battery

2 d30h (41mm) or 40h (45mm) with always-on, battery saver 48h or 72h

Display

AMOLED · always-on

Water resistance

5ATM + IP68 (swim)

GPS

Multi-band

Weight

31 g

Case size

41mm & 45mm

Works with

Android only

Subscription

Not required · Google Health Premiumnot required for measured signals, gates AI coaching and adaptive plans

Extras

MusicContactless payLTEOffline maps

not confirmed: Active Zone Minutes after the May 2026 Google Health redesign

What it tracks

Heart & vitals

Resting heart rateConsumer

HRVConsumer

Blood oxygen (SpO2)Consumer

Respiratory rateConsumer

Skin temperatureConsumer

ECG recordingtracked

AFib detectionClinical grade

Sleep

Sleep durationConsumer

Sleep stagesConsumer

Sleep scoreConsumer

Activity

StepsConsumer

Active minutesConsumer

CaloriesConsumer

WorkoutsConsumer

Floorstracked

Distancetracked

Fitness

VO2maxClinical grade

Training loadtracked

Recovery / readinesstracked

All-day stresstracked

Screening, not a medical diagnosis. This device offers ECG, AFib detection, SpO2. These are wellness screening features, not a substitute for a clinical evaluation.

Sources

https://blog.google/products-and-platforms/devices/pixel/pixel-watch-4/
https://support.google.com/googlepixelwatch/answer/12651869

If you want to go deeper

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