Wear Radar

Garmin Forerunner 165vsGarmin vivosmart 5

11d vs 7d
battery life
Garmin Forerunner 165 lasts longer
$100
price gap
Garmin vivosmart 5 cheaper
14g
lighter
Garmin vivosmart 5
Garmin Forerunner 165
Buy/Wait:bad

Late in cycle — a new model is likely coming

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Garmin vivosmart 5
Buy/Wait:bad

Late in cycle — a new model is likely coming

Full details →
Garmin Forerunner 165Garmin vivosmart 5
Pricing
Starting price$249$149
Subscriptionℹ️ Optional — $70/yrℹ️ Optional — $70/yr
Hardware
Weight39g25g
Water resistance5ATM5ATM
Battery11 days7 days
Always-on display
GPS
Cellular
PlatformiOS & AndroidiOS & Android
TierSports GPSFitness Tracker
Buy timing
ReleasedMar 5, 2024Apr 26, 2022
Cycle advicebadbad
Deals advicegoodgreat
Next modelGarmin Forerunner 170 (Expected March 2026)Garmin vivosmart 6 (Expected 2026)

Health Sensors

Garmin Forerunner 165 only
No exclusive sensors
Both
5 shared
Heart RateContinuous or on-demand pulse tracking
SpO2Blood oxygen saturation, tracked during sleep
HRVHeart rate variability — stress & recovery scores
Stress TrackingStress estimate from HRV and physiological signals
Body BatteryGarmin's energy reserve — how much fuel left in the tank
Garmin vivosmart 5 only
No exclusive sensors

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.

Garmin vivosmart 5

Garmin Body Battery in a band

Body Battery energy monitoring — the feature Garmin is known for — in a wristband that's thinner than most fitness trackers.

HRV status and stress tracking

Continuous heart rate variability monitoring and all-day stress tracking give a more complete picture of recovery and readiness than step counts alone.

Works with Garmin Connect ecosystem

All data syncs to Garmin Connect, compatible with thousands of third-party apps, coaches, and integrations across the Garmin platform.

Quick Winner

The right pick depends on what you optimize for.

For the budget
Garmin vivosmart 5 wins

$359 vs $459 over 3 years · no required subscription.

For battery life
Garmin Forerunner 165 wins

11 days vs 7 days battery.

For health depth
Garmin Forerunner 165 wins

5 sensors.

For daily comfort
Garmin vivosmart 5 wins

25g · no required subscription.

Bottom Line

Technical gaps
  1. Weight. vivosmart 5 is 14g lighter — relevant for all-day comfort and sleep.
Commercial gaps
  1. Hardware cost. vivosmart 5 is $100 cheaper upfront ($149 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.

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Pick the Garmin vivosmart 5 if…

Garmin users and health-focused individuals who want Body Battery, HRV, and advanced sleep analytics in a slim, discreet wristband rather than a sports watch. Compatible with both iPhone and Android via Garmin Connect.

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