Wear Radar

Garmin Forerunner 165vsFitbit Sense

11d vs 6d
battery life
Garmin Forerunner 165 lasts longer
$50
price gap
Fitbit Sense cheaper
13g
lighter
Fitbit Sense
Garmin Forerunner 165
Buy/Wait:bad

Late in cycle — a new model is likely coming

Full details →
Fitbit Sense
Buy/Wait:bad

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

Full details →
Garmin Forerunner 165Fitbit Sense
Pricing
Starting price$249$199
Subscriptionℹ️ Optional — $70/yrℹ️ Optional — $79/yr
Hardware
Weight39g26g
Water resistance5ATM50m
Battery11 days6 days
Always-on display
GPS
Cellular
PlatformiOS & AndroidiOS & Android
TierSports GPSSmartwatch
Buy timing
ReleasedMar 5, 2024Sep 28, 2022
Cycle advicebadbad
Deals advicegoodgood
Next modelGarmin Forerunner 170 (Expected March 2026)

Health Sensors

Garmin Forerunner 165 only
2 exclusive sensors
Stress TrackingStress estimate from HRV and physiological signals
Body BatteryGarmin's energy reserve — how much fuel left in the tank
Both
3 shared
Heart RateContinuous or on-demand pulse tracking
SpO2Blood oxygen saturation, tracked during sleep
HRVHeart rate variability — stress & recovery scores
Fitbit Sense only
3 exclusive sensors
ECGDetects irregular heart rhythms (AFib)
EDA / StressSkin conductance sensor measuring stress responses
Skin TempOvernight changes linked to illness or cycle tracking

Why buy each?

Garmin Forerunner 165

AMOLED display at entry-level price

The FR165 is the first Garmin entry-level running watch with an AMOLED display — dramatically more readable than the LCD it replaces.

Full Garmin running analytics

Training load, recovery time, Body Battery, HRV status, VO2 max estimation — the same analytics found on watches costing twice as much.

11 days of battery

11 days typical use and roughly 19 hours GPS — enough for most training blocks without mid-week charging.

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.

Quick Winner

The right pick depends on what you optimize for.

For the budget
Fitbit Sense wins

$436 vs $459 over 3 years · no required subscription.

For battery life
Garmin Forerunner 165 wins

11 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. Forerunner 165-only sensors: Stress Tracking, Body Battery.
  2. Sense-only sensors: ECG, EDA / Stress, Skin Temp.
  3. Weight. Sense is 13g lighter — relevant for all-day comfort and sleep.
Commercial gaps
  1. Hardware cost. Sense is $50 cheaper upfront ($199 vs $249).
Pick the Garmin Forerunner 165 if…

Beginner and intermediate runners who want real GPS accuracy and Garmin's analytics depth without the price of the 265 or 965. Also ideal as a first serious GPS watch for anyone moving up from a fitness tracker.

Full details →
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.

Full details →