Garmin · 2024
Forerunner® 165Size, Dimensions & Wrist Fit
The Garmin Forerunner® 165 sits best on flat wrist widths of about 45–61mm (≈ 12.0–16.3cm wrist circumference). Adjust the slider below to check your wrist.
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The Forerunner® 165 in short
The figures that decide whether this watch suits you, pulled out of the full specification sheet further down.
- Between 17 hours and 20 days per charge depending on the power mode — battery saver smartwatch at best, all-systems gnss at worst.
- Water rated to 5 ATM.
- 39g on the wrist. Lighter than 70% of the 43mm watches we have weights for.
- 1.2" (30.4 mm) diameter AMOLED (optional always-on mode) display.
- chemically strengthened glass case, chemically strengthened glass glass.
Does the Forerunner® 165 fit your wrist?
Drag the slider to your wrist width and see the Forerunner® 165 overlaid at true scale. Lug-to-lug — not case diameter — decides whether a watch overhangs your wrist.
Happy with the fit? Check current availability for the Forerunner® 165.
Check offer2D Dimension Schematics
The Forerunner® 165 drawn to scale — from above, and in profile against the wrist.
- Garmin Forerunner® 16543mm · 11.6mm thick
3D preview
Garmin Forerunner® 165 on a wrist
On an arm sized to your own wrist — the view a product photo never gives you.
Shapes are built from published measurements, not manufacturer 3D models — accurate proportions, generic dial.
How long the Forerunner® 165 lasts, by power mode
Runtime changes by a factor of 28 depending on what you leave switched on. Bars are scaled against the longest mode.
- Battery Saver Smartwatch20 days
- Smartwatch11 days
- GPS-Only GNSS19 hours
- All-Systems GNSS17 hours
How the Forerunner® 165 ranks on battery
Against the 268 Garmin watches in our database, ranked on each figure Garmin publishes.
- Everyday use11 days#166 of 257
- GPS tracking19 hours#163 of 233
- Power save20 days#93 of 106
Forerunner® 165 specifications
The figures that decide a purchase, followed by every line Garmin publishes.
- 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
- Display
- 1.2" (30.4 mm) diameter
- Resolution
- 390 x 390 pixels
- Water rating
- 5 ATM
- Bezel
- fiber-reinforced polymer
- Glass
- chemically strengthened glass
- Strap
- silicone
- Storage
- 4 GB
- Charging
- Garmin proprietary plug charger
Full specification sheet
189 published lines across 18 groups, unedited
Overview
- Family
- Garmin
General
- 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
- Battery type
- Lithium ion
- Display Size
- 1.2" (30.4 mm) diameter
- Color display
- Lens Material
- chemically strengthened glass
- Bezel Material
- fiber-reinforced polymer
- Memory/History
- 4 GB
- Strap material
- silicone
- Charging method
- Garmin proprietary plug charger
- Large font option
- Display resolution
- 390 x 390 pixels
- Quick Release bands
- yes (20 mm, Industry standard)
Sensors
- GPS
- Compass
- GLONASS
- Galileo
- Thermometer
- Accelerometer
- Ambient light sensor
- Barometric altimeter
- Pulse Ox Blood Oxygen Saturation Monitor
- Garmin Elevate™ wrist heart rate monitor
Product Info
- Main SKU
- 010-02863-20
- Product ID
- 1055469
- Product Name
- Forerunner® 165
- Release Date
- 2/20/2024
- Product Variation
- Black/Slate Gray
Clock Features
- Timer
- Stopwatch
- Time/date
- Alarm clock
- GPS Time Sync
- Sunrise/sunset times
- Automatic daylight saving time
Cycling Features
- Courses
- Compatible with Varia™ lights
- Compatible with Varia headlight camera
- Speed and cadence sensor support (w/sensor)
- Compatible with Varia™ radar (rear-facing radar)
- Alerts (triggers alarm when you reach goals including time, distance, heart rate or calories)
Running Features
- Run workouts
- Running power
- Race predictor
- Foot pod capable
- Running dynamics
- Run/Walk/Stand detection
- Stride length (real time)
- PacePro™ Pacing Strategies
- Vertical oscillation and ratio
- Ground contact time and balance
- yes (but not balance)
- GPS-based distance, time and pace
- Course- and weather-specific race predictor
- Cadence (provides real-time number of steps per minute)
What You'll Love
- Touchscreen
- Display type
- AMOLED (optional always-on mode)
- Water rating
- 5 ATM
- Garmin Pay™
- Pulse Ox blood oxygen
- yes (spot-check, during sleep, all day)
- Sleep score and insights
- Battery life (smartwatch mode)
- Up to 11 days
Activity Profiles
- Gym
- Strength, HIIT, Cardio, Elliptical Training, Stair Stepping, Floor Climbing
- Swim
- Pool Swimming, Open Water Swimming
- Cycling
- Biking, Indoor Biking
- Wellness
- Walking, Pilates, Yoga, Indoor Walking
- Racket sports
- Tennis, Pickleball, Padel
- Indoor running
- Treadmill Running, Indoor Track Running, Virtual Running
- Outdoor running
- Running, Outdoor Track Running, Trail Running, Ultra Running
- Outdoor recreation
- Hiking
Swimming Features
- Time and distance alerts
- Auto rest (pool swim only)
- Drill logging (pool swim only)
- Countdown start (pool swim only)
- Underwater wrist-based heart rate
- "Repeat on" rest timer (pool swim only)
- Basic rest timer (up from 0) (pool swim only)
- Stroke type detection (freestyle, backstroke, breaststroke, butterfly) (pool swim only)
- Pool swim metrics (lengths, distance, pace, stroke count, swim efficiency (SWOLF), calories)
- Open-water swim metrics (distance, pace, stroke count/rate, stroke distance, swim efficiency (SWOLF), calories)
Outdoor Recreation
- Auto rest
- TracBack®
- Back to start
- Fish forecast
- yes (via Connect IQ™)
- UltraTrac mode
- Area calculation
- yes (via Connect IQ™)
- Elevation profile
- Total ascent/descent
- Future elevation plot
- Distance to destination
- Sun and moon information
- yes (via Connect IQ™)
- Point-to-point navigation
- Rest Timer (Ultra Run only)
- Bread crumb trail in real time
Daily Smart Features
- Calendar
- Passcode
- Connectivity
- Bluetooth®, ANT+®
- Garmin Share
- Find My Phone
- Find My Watch
- Morning report
- Red shift mode
- Weather forecasts
- Smart Notifications
- Smartphone compatibility
- iPhone®, Android™
- Controls smartphone music
- On-device Connect IQ™ Store
- Find My Phone during GPS activity
- Pairs with Garmin Connect™ Mobile
- Compatible with Garmin Messenger app
- Battery saver (customizable low power watch)
- Realtime settings sync with Garmin Connect™ mobile
- View images from notifications on watch (Android™ only)
- Text response/reject phone call with text (Android™ only)
- Connect IQ™ (downloadable watch faces, data fields and apps)
Activity Tracking Features
- TrueUp™
- Move IQ™
- Step counter
- Floors climbed
- Calories burned
- Distance traveled
- Intensity minutes
- Automatic rep counting
- Garmin Connect™ Challenges app
- yes (optional Connect IQ app)
- Move alerts (displays on device after a period of inactivity)
- Auto goal (learns your activity level and assigns a daily step goal)
Workout and Training Plans
- HIIT workouts
- Yoga workouts
- Cardio workouts
- Pilates workouts
- Strength workouts
- Garmin Running Coach
- yes (no strength add-on)
- Garmin Running Coach Experts
- Garmin Coach - Prebuilt Cycling Plans
- Daily Suggested Workout - Running (Pace and Heart Rate Based)
Health & Wellness Monitoring
- Sleep
- yes (advanced)
- Hydration
- yes (in Garmin Connect™ and optional Connect IQ™ widget)
- Breathwork
- Fitness age
- Nap detection
- All-day stress
- Women's health
- yes (in Garmin Connect™ and optional Connect IQ™ widget)
- Health snapshot
- Respiration rate
- Resting heart rate
- Breathing variations
- Relaxation reminders
- Abnormal heart rate alerts
- yes (high and low)
- Relaxation breathing timer
- Body Battery™ energy monitor
- Wrist-based heart rate (constant, every second)
Safety and Tracking Features
- Assistance
- Live Event Sharing
- Android™ Only
- Incident Detection during select activities
- Incident detection alert on phone for wearables
Kid Activity Tracking Features
- Toe-to-Toe™ Challenges app
- yes (optional Connect IQ Toe-to-Toe™ Challenges app)
Training, Planning and Analysis Features
- % HRR
- % HR max
- HR zones
- HR alerts
- HRV status
- Manual lap
- Rest timer
- Auto max HR
- Finish time
- HR calories
- Voice alerts
- Physio TrueUp
- Recovery time
- VO2 Max (Run)
- Course guidance
- Training effect
- Advanced workouts
- Interval training
- Race glance/widget
- VO2 Max (Trail Run)
- GPS speed and distance
- Configurable lap alerts
- Customizable data pages
- Touch and/or button lock
- Activity history on watch
- Downloadable training plans
- Training effect (anaerobic)
- HRM running pace and distance
- Customizable activity profiles
- Auto Pause® automatic timer halt
- Respiration rate (during exercise)
- Yoga and Breathwork only
- Auto Lap® interval tracking feature
- Primary benefit (Training Effect labels)
- HR broadcast (broadcasts HR data over ANT+® to paired devices)
Compare the Forerunner® 165 head to head
How each one differs in the three measurements you can feel on the wrist. Figures are relative to the Forerunner® 165.
Pixel Watch 4 - 41mm
- Width
- -2mm
- Thick
- +0.7mm
- Weight
- -8g
Pixel Watch 4 - 45mm
- Width
- +2mm
- Thick
- +0.7mm
- Weight
- -2.3g
Huawei
Watch 5 - 42mm
- Width
- -1mm
- Thick
- -1.1mm
- Weight
- +12g
Garmin
Forerunner® 570 - 42mm
- Width
- -0.6mm
- Thick
- +1.3mm
- Weight
- +3g
Garmin
Vivoactive 6
- Width
- -0.8mm
- Thick
- -0.7mm
- Weight
- -3g
Huawei
Watch GT 5 Pro 42 mm
- Width
- -0.5mm
- Thick
- -2mm
- Weight
- +5g
Garmin
fēnix® 8 – 43 mm, AMOLED
- Width
- same mm
- Thick
- +2.2mm
- Weight
- +27g
Garmin
Forerunner® 165 Music
- Width
- same mm
- Thick
- same mm
- Weight
- same g
Amazfit
Active
- Width
- -0.6mm
- Thick
- -0.8mm
- Weight
- -12g
Samsung
Galaxy Watch6 - LTE · 44mm
- Width
- -0.2mm
- Thick
- -2.6mm
- Weight
- -5.7g
Samsung
Galaxy Watch6 - Wi-Fi · 44mm
- Width
- -0.2mm
- Thick
- -2.6mm
- Weight
- -5.7g
Amazfit
GTR Mini
- Width
- -0.2mm
- Thick
- -2.3mm
- Weight
- -2.8g
Alternatives to the Forerunner® 165
Watches that cover a similar amount of wrist, with the measurements that separate them.
Garmin
Bounce 2
- Width
- 43mm
- Thick
- 12.4mm
- Weight
- 26.5g
Garmin
Approach® S44
- Width
- 43mm
- Thick
- 11.4mm
- Weight
- 42g
Garmin
Approach® S50
- Width
- 43mm
- Thick
- 11.4mm
- Weight
- 29g
Garmin
fēnix® 8 – 43 mm, AMOLED
- Width
- 43mm
- Thick
- 13.8mm
- Weight
- 66g
Garmin
Forerunner® 165 Music
- Width
- 43mm
- Thick
- 11.6mm
- Weight
- 39g
Garmin
Descent™ Mk3i – 43 mm
- Width
- 43mm
- Thick
- 14.3mm
- Weight
- 49.3g
Forerunner® 165 — Frequently Asked Questions
Will the Garmin Forerunner® 165 fit my wrist?
The Garmin Forerunner® 165 looks balanced on flat wrist widths of roughly 45–61mm (about 12.0–16.3cm circumference). Drag the slider above to check it against your own measurement.
How long does the Garmin Forerunner® 165 battery last?
Between 17 hours and 20 days per charge, depending on the power mode. Garmin rates Battery Saver Smartwatch at 20 days and All-Systems GNSS at 17 hours; the chart above lists all 4 modes.
How does the Garmin Forerunner® 165 battery compare with other Garmin watches?
At 11 days in everyday use it ranks #166 of the 257 Garmin watches in our database — below the middle of the range. The full ranking, including GPS and power-saving figures, is on our Garmin battery life comparison.
Is the Garmin Forerunner® 165 thick for a 43mm watch?
At 11.6mm, thinner than 86% of 43mm watches, so it slides under a cuff more easily than most of its size. Thickness, not case width, is what decides whether a watch catches on a shirt cuff.
What other watches are the same size as the Garmin Forerunner® 165?
OnePlus Watch 3 43mm, Oppo Watch X2 Mini, Omega Speedmaster Moonphase Stainless Steel / Black Meteorite / Bracelet, Zenith Defy Extreme Diver Shadow / Bracelet all sit within half a millimetre of the Garmin Forerunner® 165's 43mm case, so they cover the same amount of wrist.
