Wear Radar

Fitbit SensevsGarmin Fenix

18d vs 6d
battery life
Garmin Fenix lasts longer
$800
price gap
Fitbit Sense cheaper
30g
lighter
Fitbit Sense
5
more health sensors
Garmin Fenix
Fitbit Sense
Buy/Wait:bad

Overdue for a refresh — no successor announced yet. Prices should be at their lowest

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Garmin Fenix
Buy/Wait:bad

Late in cycle — a new model is likely coming

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Fitbit SenseGarmin Fenix
Pricing
Starting price$199$999
Subscriptionℹ️ Optional — $79/yrℹ️ Optional — $70/yr
Hardware
Weight26g56g
Water resistance50m10ATM
Battery6 days18 days
Always-on display
GPS
Cellular
PlatformiOS & AndroidiOS & Android
TierSmartwatchSports GPS
Buy timing
ReleasedSep 28, 2022Aug 14, 2024
Cycle advicebadbad
Deals advicegoodgood
Next modelGarmin Fenix 9 (H2 2026)

Health Sensors

Fitbit Sense 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
Skin TempOvernight changes linked to illness or cycle tracking
HRVHeart rate variability — stress & recovery scores
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 Sense

Continuous EDA stress tracking

The EDA (electrodermal activity) sensor tracks physiological stress throughout the day — a feature absent from most competitors at this price.

6 months Fitbit Premium included

Comes with Fitbit Premium for advanced sleep analysis, HRV trends, stress management scores, and personalised health insights.

6-day battery, works with iPhone

Unlike Apple Watch or Galaxy Watch, Sense 2 pairs with any smartphone and runs 6 days before charging.

Garmin Fenix

Built-in speaker and microphone

First Fenix to include a speaker — enabling phone calls, Bluetooth audio, and voice prompts directly from the watch.

AMOLED or Solar: choose your battery priority

AMOLED for the best display at 18 days. Solar MIP for up to 48+ days in expedition conditions where charging is impossible.

Certified for diving, rated for mountains

EN13319 dive mode (up to 40m), MIL-STD-810 shock resistance, and TopoActive maps covering 100+ countries — the most capable outdoor watch in Garmin's lineup.

Quick Winner

The right pick depends on what you optimize for.

For the budget
Fitbit Sense wins

$436 vs $1209 over 3 years · no required subscription.

For battery life
Garmin Fenix wins

18 days vs 6 days battery.

For health depth
Garmin Fenix wins

11 sensors.

For daily comfort
Fitbit Sense wins

26g · no required subscription.

Bottom Line

Technical gaps
  1. Sense-only sensors: EDA / Stress.
  2. Fenix-only sensors: Stress Tracking, Body Battery, Training Readiness, Running Dynamics, Respiration, Depth Gauge.
  3. Weight. Sense is 30g lighter — relevant for all-day comfort and sleep.
  4. Water resistance. Fenix rates 10ATM vs 50m on Sense.
Commercial gaps
  1. Hardware cost. Sense is $800 cheaper upfront ($199 vs $999).
Pick the Fitbit Sense if…

Health-conscious users on any platform who want continuous stress monitoring (EDA sensor), ECG, and Fitbit's deep wellness coaching — without paying Galaxy Watch or Apple Watch prices. Particularly strong for iPhone users who want serious health tracking at under $250.

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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.

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