Wear Radar

Fitbit ChargevsGarmin Forerunner 970

15d vs 7d
battery life
Garmin Forerunner 970 lasts longer
$629
price gap
Fitbit Charge cheaper
41g
lighter
Fitbit Charge
3
more health sensors
Garmin Forerunner 970
Fitbit Charge
Buy/Wait:bad

Late in cycle — a new model is likely coming

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Garmin Forerunner 970
Buy/Wait:good

Early in release cycle

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Fitbit ChargeGarmin Forerunner 970
Pricing
Starting price$120$749
Subscriptionℹ️ Optional — $79/yrℹ️ Optional — $70/yr
Hardware
Weight15g56g
Water resistance50m5ATM
Battery7 days15 days
Always-on display
GPS
Cellular
PlatformiOS & AndroidiOS & Android
TierFitness TrackerSports GPS
Buy timing
ReleasedSep 28, 2023May 15, 2025
Cycle advicebadgood
Deals advicegreatneutral
Next modelFitbit Charge 7 (Expected 2026)

Health Sensors

Fitbit Charge only
1 exclusive sensor
EDA / StressSkin conductance sensor measuring stress responses
Both
5 shared
ECGDetects irregular heart rhythms (AFib)
SpO2Blood oxygen saturation, tracked during sleep
Heart RateContinuous or on-demand pulse tracking
HRVHeart rate variability — stress & recovery scores
Skin TempOvernight changes linked to illness or cycle tracking
Garmin Forerunner 970 only
4 exclusive sensors
Stress TrackingStress estimate from HRV and physiological signals
Body BatteryGarmin's energy reserve — how much fuel left in the tank
Training ReadinessDaily recovery score — how ready you are to perform
Running DynamicsCadence, ground contact time, stride length, vertical oscillation

Why buy each?

Fitbit Charge

ECG and EDA stress in a slim band

Full ECG, electrodermal activity stress sensing, SpO2, and continuous heart rate in a tracker thinner than most smartwatches.

Google apps integration

Google Maps navigation, Google Wallet NFC payments, and YouTube Music controls — more useful on-device apps than any previous Charge.

7-day battery with GPS

7 days of typical use, dropping to around 30 minutes per GPS workout session before needing a charge.

Garmin Forerunner 970

ECG, flashlight, and sapphire lens

The FR970 is the first Forerunner with ECG and a built-in LED flashlight — plus a sapphire crystal lens and titanium DLC case for durability that rivals the Fenix 8.

Full color TopoActive maps + Triathlon Coach

Turn-by-turn navigation on preloaded worldwide TopoActive maps, combined with AI-powered Garmin Triathlon Coach structured training plans — a premium combination at any price.

Running dynamics + Elevate Gen 5

Full biomechanics suite (cadence, vertical oscillation, ground contact time, running power) plus Garmin's most advanced heart rate sensor with skin temperature monitoring.

Quick Winner

The right pick depends on what you optimize for.

For the budget
Fitbit Charge wins

$357 vs $959 over 3 years · no required subscription.

For battery life
Garmin Forerunner 970 wins

15 days vs 7 days battery.

For health depth
Garmin Forerunner 970 wins

9 sensors.

For daily comfort
Fitbit Charge wins

15g · no required subscription.

Bottom Line

Technical gaps
  1. Charge-only sensors: EDA / Stress.
  2. Forerunner 970-only sensors: Stress Tracking, Body Battery, Training Readiness, Running Dynamics.
  3. Weight. Charge is 41g lighter — relevant for all-day comfort and sleep.
Commercial gaps
  1. Hardware cost. Charge is $629 cheaper upfront ($120 vs $749).
Pick the Fitbit Charge if…

Anyone who wants serious health and fitness tracking without the bulk or cost of a full smartwatch. Works with both Android and iPhone, making it the most accessible Fitbit tracker in the lineup.

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Pick the Garmin Forerunner 970 if…

Competitive runners, triathletes, and ultramarathon runners who want the complete Garmin premium running analytics suite: ECG, full maps, running dynamics, Triathlon Coach, and the most durable build in the Forerunner line. Replaces the FR965 as Garmin's top running watch.

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