Wear Radar

Fitbit SensevsPolar Vantage V

8d vs 6d
battery life
Polar Vantage V lasts longer
$400
price gap
Fitbit Sense cheaper
13g
lighter
Fitbit Sense
Fitbit Sense
Buy/Wait:bad

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

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Polar Vantage V
Buy/Wait:bad

Late in cycle — a new model is likely coming

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Fitbit SensePolar Vantage V
Pricing
Starting price$199$599
Subscriptionℹ️ Optional — $79/yr✓ None
Hardware
Weight26g39g
Water resistance50m5ATM
Battery6 days8 days
Always-on display
GPS
Cellular
PlatformiOS & AndroidiOS & Android
TierSmartwatchSports GPS
Buy timing
ReleasedSep 28, 2022Oct 4, 2023
Cycle advicebadbad
Deals advicegoodgood
Next modelPolar Vantage V4 (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
Polar Vantage V only
1 exclusive sensor
Running PowerWrist-based watt output — tracks effort independent of terrain

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.

Polar Vantage V

ECG on a sports GPS watch

Polar Vantage V3 is one of the few sports GPS watches with on-demand ECG — usually only found on lifestyle smartwatches.

Wrist-based running power

Running power measurement without a foot pod or chest strap — a significant training metric for pacing effort on hills and varied terrain.

Polar Training Load Pro

The most detailed training load analysis in any sports watch: muscle groups targeted per session, recovery status per muscle, and long-term load trends.

Quick Winner

The right pick depends on what you optimize for.

For the budget
Fitbit Sense wins

$436 vs $599 over 3 years · no required subscription.

For battery life
Polar Vantage V wins

8 days vs 6 days battery.

For health depth
Fitbit Sense wins

6 sensors.

For daily comfort
Fitbit Sense wins

26g · no required subscription.

Bottom Line

Technical gaps
  1. Sense-only sensors: EDA / Stress.
  2. Vantage V-only sensors: Running Power.
  3. Weight. Sense is 13g lighter — relevant for all-day comfort and sleep.
Commercial gaps
  1. Hardware cost. Sense is $400 cheaper upfront ($199 vs $599).
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 Polar Vantage V if…

Serious endurance athletes — particularly runners and triathletes — who want Polar's unmatched training load science and recovery guidance, combined with ECG health monitoring and running power in a premium package.

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