Wear Radar

Garmin Forerunner 165vsPolar Vantage V

11d vs 8d
battery life
Garmin Forerunner 165 lasts longer
$350
price gap
Garmin Forerunner 165 cheaper
Garmin Forerunner 165
Buy/Wait:bad

Late in cycle — a new model is likely coming

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Polar Vantage V
Buy/Wait:bad

Late in cycle — a new model is likely coming

Full details →
Garmin Forerunner 165Polar Vantage V
Pricing
Starting price$249$599
Subscriptionℹ️ Optional — $70/yr✓ None
Hardware
Weight39g39g
Water resistance5ATM5ATM
Battery11 days8 days
Always-on display
GPS
Cellular
PlatformiOS & AndroidiOS & Android
TierSports GPSSports GPS
Buy timing
ReleasedMar 5, 2024Oct 4, 2023
Cycle advicebadbad
Deals advicegoodgood
Next modelGarmin Forerunner 170 (Expected March 2026)Polar Vantage V4 (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
Polar Vantage V only
3 exclusive sensors
ECGDetects irregular heart rhythms (AFib)
Running PowerWrist-based watt output — tracks effort independent of terrain
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.

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
Garmin Forerunner 165 wins

$459 vs $599 over 3 years · no required subscription.

For battery life
Garmin Forerunner 165 wins

11 days vs 8 days battery.

For health depth
Polar Vantage V wins

6 sensors.

For daily comfort
Garmin Forerunner 165 wins

39g · no required subscription.

Bottom Line

Technical gaps
  1. Forerunner 165-only sensors: Stress Tracking, Body Battery.
  2. Vantage V-only sensors: ECG, Running Power, Skin Temp.
Commercial gaps
  1. Hardware cost. Forerunner 165 is $350 cheaper upfront ($249 vs $599).
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.

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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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