Skip to content
MyBodyAI
LEARN
Topic Guides Blog Glossary Tools
DEVICES
Compare all devices Supported devices
Products Pricing FAQ About MyBodyAI
Wearable comparison / Fitbit / Fitbit Charge 6
FITBIT

Fitbit Charge 6

WatchMid-rangereleased 2023

Key specs

Battery
7 d7 days; heavy GPS/SpO2/always-on ~2-3 days
Display
AMOLED · always-on
Water resistance
5ATM / 50m (swim)
GPS
Built-in
Weight
15 g
Case size
36.7x23.1x11.2mm
Works with
iOS + Android
Subscription
Not required · Fitbit Premiumbasic HR/steps/sleep/ECG/GPS/Wallet free; Daily Readiness + deep sleep analytics gated
Extras
MusicContactless pay
not confirmed: gps_hours

What it tracks

Heart & vitals

Resting heart rateConsumer
HRVConsumer
Blood oxygen (SpO2)Consumer
Respiratory rateConsumer
Skin temperatureConsumer
ECG / AFibClinical grade

Sleep

Sleep durationConsumer
Sleep stagesConsumer
Sleep scoreConsumer
Sleep efficiencyConsumer

Activity

StepsConsumer
Active minutesConsumer
CaloriesConsumer
WorkoutsConsumer
Distancetracked

Fitness

VO2maxClinical grade
Training loadtracked
Recovery / readinesstracked
Screening, not a medical diagnosis. This device offers ECG / AFib, SpO2. These are wellness screening features, not a substitute for a clinical evaluation.

Sources

https://www.dcrainmaker.com/2023/10/fitbit-charge-depth-review.html
If you want to go deeper

Turn any of these wearables into daily health scores

MyBodyAI reads the signals from your device and builds daily recovery, sleep, load and immune scores, a biological age estimate, and early warnings. Optional, and separate from this comparison.

Try MyBodyAI

This comparison is free, ad-free and has no affiliate links. I build and update it on my own. If it saved you hours of research, a coffee genuinely makes my day.

Buy me a coffee

Back to all devices