Forerunner® 165
The Garmin Forerunner 165 is a GPS running smartwatch designed to deliver a complete fitness experience without complexity. Its bright 1.2″ AMOLED touchscreen and lightweight 43 mm case (≈ 39 g) make it comfortable enough for everyday wear or long training sessions. With wrist-based heart rate, built-in GPS, and support for 25+ sports, the watch tracks pace, distance, and performance across running, cycling, strength training, and more — all bundled into a compact, easy-to-use package. Smart notifications, contactless payments via Garmin Pay™, and a clean smartwatch interface give it everyday usability beyond workouts.
For those serious about progress, Forerunner 165 offers adaptive workout plans, recovery insights, and detailed health tracking. Daily suggested workouts and race-adaptive training plans help you prepare for events like 5Ks or half-marathons, while recovery tools such as sleep monitoring, Body Battery™ energy levels, and recovery time analysis assist with post-workout planning. Battery life reaches up to 11 days in smartwatch mode (and up to 19 hours in GPS mode), giving you reliable performance for long training cycles.
What You'll Love
- Sleep score and insights
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Battery life (smartwatch mode): Up to 11 days
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Pulse Ox blood oxygen: yes (spot-check, during sleep, all day)
- Garmin Pay™
- Music storage
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Display type: AMOLED (optional always-on mode)
- Touchscreen
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Water rating: 5 ATM
Specs
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Strap material: silicone
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Lens Material: chemically strengthened glass
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Bezel Material: fiber-reinforced polymer
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Quick Release bands: yes (20 mm, Industry standard)
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Physical size: 43 x 43 x 11.6 mm
- Fits wrists with a circumference of 126-203 mm
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Weight: 39 g
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Display Size: 1.2" (30.4 mm) diameter
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Display resolution: 390 x 390 pixels
- Color display
- Large font option
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Battery type: Lithium ion
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Battery life:
- Smartwatch mode: Up to 11 days
- Battery Saver Smartwatch mode: Up to 20 days
- GPS-Only GNSS mode: Up to 19 hours
- All-Systems GNSS mode: Up to 17 hours
- See Details
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Charging method: Garmin proprietary plug charger
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Memory/History: 4 GB
PLAN
LONG BATTERY LIFE
Up to 11 days in smartwatch mode and up to 19 hours in GPS mode for a more complete health and training picture.
RECOVERY TIME
Know how long to recover before your next intense workout based on recent training, stress, sleep, and activity.
SLEEP MONITORING & SLEEP SCORE
View sleep score, sleep stages, and insights for improved nightly recovery1.
BODY BATTERY™ ENERGY MONITORING
Monitor daily energy levels and learn how sleep, stress, and activity influence recovery1.
COURSES
Create or download training routes in Garmin Connect and sync to your watch.
RACE PREDICTOR
Estimates potential finish times for 5K, 10K, half-marathon and marathon events.
NAP DETECTION
Automatically track and evaluate naps to see how they benefit recovery and energy.
BREATHING VARIATIONS
Monitor sleep breathing shifts for insight into lifestyle impact & potential sleep disorders2.
WOMEN’S HEALTH TRACKING
Log menstrual cycles or pregnancy and receive wellness guidance.
PREPARE
WRIST-BASED HEART RATE
Measures heart rate continuously to gauge daily effort and training intensity1.
WRIST-BASED RUNNING DYNAMICS
Tracks cadence, stride length, ground contact time and more for form improvement.
VO2 MAX
Displays aerobic fitness level and trends over time.
INTENSITY MINUTES
Tracks moderate and vigorous exercise duration to help meet goals.
AUDIO PROMPTS
Provides alerts and voice guidance during workouts.
STRESS TRACKING
See whether you’re experiencing calm, balanced, or high-stress periods.
PULSE OX SENSOR
Measures blood-oxygen saturation during sleep or wakefulness3.
CROSS TRAINING
Access free HIIT, strength, yoga, Pilates & cardio workouts in Garmin Connect.
HEALTH SNAPSHOT
Log a 2-minute scan of key biometrics and generate a shareable wellness report.
LIFESTYLE LOGGING
Track caffeine, alcohol & habits to see how they affect overall health.
ACTIVITY TRACKING
Monitors steps, floors, calories burned, distance and more1.
FITNESS AGE
Estimates body fitness compared to actual age.
PERFORM
BUILT-IN GNSS
Connects to multiple satellite systems for accurate pace, distance & route tracking.
WRIST-BASED RUNNING POWER
Shows power output for pacing and load control on runs.
BUILT-IN SPORTS APPS
Includes 25+ activity profiles — cycling, swimming, strength & more.
TRACK RUNNING
Accurately records track laps and displays distance in meters.
PACEPRO™
GPS-based split pacing guidance for optimized race strategy.
CONNECT
SAFETY & TRACKING
Automatic incident detection and manual emergency alerts with live location4.
GARMIN PAY™
Tap-to-pay contactless payments at supported terminals.
SMART NOTIFICATIONS
Receive text messages, calls and alerts when paired with iPhone® or Android™.
LIVETRACK
Allow friends to view live location and route information3.
GARMIN TRAILS
Sync thousands of trails for offline use with Garmin Connect+ or Outdoor Maps+.
GARMIN CONNECT APP
View health stats, training insights, social challenges & progress trends.
CONNECT IQ™ STORE
Customize with apps, widgets, watch faces & data fields.
GOOGLE MAPS™ APP
Turn-by-turn directions from your Android phone — view right on the watch.
GARMIN SHARE
Share runs, locations & courses wirelessly with other Garmin Share devices.
