Wear Radar

Garmin Forerunner 165vsWHOOP 5.0

Required
sub to use
Garmin Forerunner 165 has no required sub
14d vs 11d
battery life
WHOOP 5.0 lasts longer
$138
3-yr cost gap
Garmin Forerunner 165 cheaper
26 Hz
HR sampling
WHOOP 5.0 only — Garmin Forerunner 165 undisclosed
Garmin Forerunner 165
Buy/Wait:bad

Late in cycle — a new model is likely coming

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WHOOP 5.0
Buy/Wait:good

Early in release cycle

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Garmin Forerunner 165WHOOP 5.0
Pricing
Starting price$249Free (hw)
Subscriptionℹ️ Optional — $70/yr⚠️ Required — $199/yr
Year 1 total cost$319$199
Year 3 total cost$459$597
Hardware
Weight39g27g
Water resistance5ATM10ATM
Battery11 days14 days
Always-on display
GPS
Cellular
PlatformiOS & AndroidiOS & Android
TierSports GPSFitness Tracker
Buy timing
ReleasedMar 5, 2024May 8, 2025
Cycle advicebadgood
Deals advicegoodneutral
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
WHOOP 5.0 only
6 exclusive sensors
Skin TempOvernight changes linked to illness or cycle tracking
Respiratory RateBreaths per minute overnight — flags illness or overtraining
Strain ScoreDaily cardiovascular load — how hard your body worked
ECGDetects irregular heart rhythms (AFib)
Blood PressureDetects hypertension patterns — trend tracking, not clinical mmHg
VO2 MaxEstimated aerobic capacity — fitness level benchmark

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.

WHOOP 5.0

WHOOP Age — healthspan tracking

WHOOP 5.0 gives you a biological age score derived from your sleep, recovery, and training habits — showing whether your lifestyle is ageing you faster or slower than your years. Updated daily, it makes long-term health trends visible at a glance.

AI Coach — coaching, not just data

WHOOP's AI Coach learns your body's patterns and delivers personalised daily recommendations in plain language — not just what happened, but why, and what to do next. It adapts to your training load, sleep debt, and recovery trends.

Strength Trainer — weight room coverage

WHOOP 5.0 added a dedicated strength trainer that auto-detects sets, measures neuromuscular load alongside cardiovascular strain, and shows recovery demand from resistance training — a gap every previous WHOOP version had.

Quick Winner

The right pick depends on what you optimize for.

For the budget
Garmin Forerunner 165 wins

$459 vs $597 over 3 years · no required subscription.

For battery life
WHOOP 5.0 wins

14 days vs 11 days battery.

For health depth
WHOOP 5.0 wins

9 sensors · 26 Hz HR sampling.

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. 5.0-only sensors: Skin Temp, Respiratory Rate, Strain Score, ECG, Blood Pressure, VO2 Max.
  3. Weight. 5.0 is 12g lighter — relevant for all-day comfort and sleep.
  4. Water resistance. 5.0 rates 10ATM vs 5ATM on Forerunner 165.
Commercial gaps
  1. Hardware cost. 5.0 is $249 cheaper upfront ($0 vs $249).
  2. Subscription. WHOOP 5.0 requires a subscription ($199/yr) — device stops working without it. Garmin Forerunner 165 has an optional subscription.
  3. 3-year total cost. Forerunner 165 costs $459 vs $597 — a $138 gap.
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 WHOOP 5.0 if…

Athletes, coaches, and fitness-obsessed users who want deep recovery and sleep data without screen distractions. WHOOP suits those who train hard and want to understand whether their body is ready to push. Not for casual users or those who want smartwatch features like notifications or GPS.

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