Wear Radar

Fitbit ChargevsGarmin Fenix

16d vs 7d
battery life
Garmin Fenix lasts longer
$879
price gap
Fitbit Charge cheaper
38g
lighter
Fitbit Charge
5
more health sensors
Garmin Fenix
Fitbit Charge
Buy/Wait:superseded

This model is no longer sold new. It has been replaced by the Fitbit Edge.

Full details →
Garmin Fenix
Buy/Wait:good

Current model just released

Full details →
Fitbit ChargeGarmin Fenix
Pricing
Starting price$120★$999
Subscriptionℹ️ Optional — $79/yrℹ️ Optional — $70/yr
Hardware
Weight15g★53g
Water resistance50m10ATM★
Battery7 days16 days★
Always-on display❌✅★
GPS✅✅
Cellular❌❌
PlatformiOS & AndroidiOS & Android
TierFitness TrackerSports GPS
Buy timing
ReleasedSep 28, 2023Aug 25, 2026
Cycle advicesupersededgood
Deals adviceclearanceneutral
Next model——

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 Fenix only
6 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
RespirationBreathing rate during sleep and activity
Depth GaugeMeasures water depth — certified for recreational diving to 40m

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 Fenix

64GB storage and faster maps

Double the map storage of the Fenix 8, with 50% more RAM and 30% faster map panning for routable built-in maps.

AMOLED or Solar: choose your battery priority

AMOLED on every Fenix 9, with up to 29 days on the 51mm. The Fenix 9 Pro Solar reaches up to 57 days with solar charging for trips where charging is impossible.

New training tools

Stamina zones, expanded rucking with adjustable pack weight, and indoor rowing metrics join Garmin's existing training analytics, plus a 40m dive rating.

Quick Winner

The right pick depends on what you optimize for.

For the budget
Fitbit Charge wins

$357 vs $1209 over 3 years.

For battery life
Garmin Fenix wins

16 days vs 7 days battery.

For health depth
Garmin Fenix wins

11 sensors.

For daily comfort
Fitbit Charge wins

15g.

Bottom Line

Technical gaps
  1. Charge-only sensors: EDA / Stress.
  2. Fenix-only sensors: Stress Tracking, Body Battery, Training Readiness, Running Dynamics, Respiration, Depth Gauge.
  3. Weight. Charge is 38g lighter — relevant for all-day comfort and sleep.
  4. Water resistance. Fenix rates 10ATM vs 50m on Charge.
Commercial gaps
  1. Hardware cost. Charge is $879 cheaper upfront ($120 vs $999).
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.

Full details →
Pick the Garmin Fenix if…

Expedition athletes, adventure racers, triathletes, mountaineers, and divers who need the most capable and durable GPS watch Garmin makes. Also for anyone who wants Garmin's best — full stop.

Full details →