WatchFitTool
Garmin Instinct® 3 – 50 mm, AMOLED — case dimensions and design

Garmin · 2025

Instinct® 3 – 50 mm, AMOLEDSize, Dimensions & Wrist Fit

Case Width

50mm

Thickness

14.4mm

Battery

24 days

Weight

59g

The Garmin Instinct® 3 – 50 mm, AMOLED sits best on flat wrist widths of about 5371mm (≈ 14.219.0cm wrist circumference). Adjust the slider below to check your wrist.

Affiliate disclosure: As an Amazon Associate, WatchFitTool earns from qualifying purchases. If you buy through links on this page, we may earn a commission at no extra cost to you. Learn more.

The Instinct® 3 – 50 mm, AMOLED in short

The figures that decide whether this watch suits you, pulled out of the full specification sheet further down.

  • Between 30 hours and 30 days per charge depending on the power mode — battery saver at best, all satellite systems + multi-band at worst.
  • Water rated to 10 ATM.
  • 59g on the wrist. Lighter than 67% of the 50mm watches we have weights for.
  • 1.3" (33 mm) diameter AMOLED (always-on) display.
  • Takes 26mm bands, so third-party straps fit without an adapter.

Does the Instinct® 3 – 50 mm, AMOLED fit your wrist?

Drag the slider to your wrist width and see the Instinct® 3 – 50 mm, AMOLED overlaid at true scale. Lug-to-lug — not case diameter — decides whether a watch overhangs your wrist.

Watch Fit Tool

For sports watches, Lug-to-Lug (L2L) is what matters most. Bulky is fine — overhang is not.

mm
40.0mm (small)80.0mm (large)
How to Measure
1

Lay arm flat, palm up.

2

Measure the flat width across top of wrist.

Garmin Instinct® 3 – 50 mm, AMOLED
010-03020-00
Case: 50mmL2L: 50mmThick: 14.4mm
Edge Clearance
+2.5mm
Sweet Spot2.5mm clearance. Perfect for sports watches - bold presence, no overhang.

Happy with the fit? Check current availability for the Instinct® 3 – 50 mm, AMOLED.

Check offer

2D Dimension Schematics

The Instinct® 3 – 50 mm, AMOLED drawn to scale — from above, and in profile against the wrist.

Highlight
From above — true scale
From the side — how far it sits off the wrist
  • Garmin Instinct® 3 – 50 mm, AMOLED50mm · 14.4mm thick

3D preview

Garmin Instinct® 3 – 50 mm, AMOLED on a wrist

On an arm sized to your own wrist — the view a product photo never gives you.

Open 3D try-on

Shapes are built from published measurements, not manufacturer 3D models — accurate proportions, generic dial.

Which Instinct 3 size fits you?

This model comes in 4 versions. Set your measurement and each one reports its own verdict — tap any size to open its page.

Which of these fits your wrist?

55.0mm

Roughly a 14.7cm wrist circumference — the measurement a tape gives you. Compared against lug-to-lug where we have it, case width otherwise.

All 4 Instinct 3 variants fit this wrist. The 50mm · AMOLED gives you the most presence without overhanging; the smallest is the discreet end of the range.

How long the Instinct® 3 – 50 mm, AMOLED lasts, by power mode

Runtime changes by a factor of 24 depending on what you leave switched on. Bars are scaled against the longest mode.

always-on displayraise-to-wake

  • Battery Saver30 days
  • Smartwatch24 days · 9 days always-on
  • Expedition GPS20 days
  • Max Battery GPS86 hours
  • GPS Only40 hours
  • All Satellite Systems32 hours
  • All Satellite Systems + Multi-Band30 hours
Lithium ion
  • * assuming typical use with SatIQ technology

How the Instinct® 3 – 50 mm, AMOLED ranks on battery

Against the 260 Garmin watches in our database, ranked on each figure Garmin publishes.

  • Everyday use30 days#84 of 249
  • GPS tracking86 hours#53 of 235
See all 260 Garmin watches ranked by battery life

What size band does the Instinct® 3 – 50 mm, AMOLED take?

Lug width

26mm

Any 26mm strap fits, so you are not restricted to Garmin's own bands. Quick-release pins let you swap without tools — check that a replacement lists 26mm and quick-release before buying.

Affiliate disclosure: As an Amazon Associate, WatchFitTool earns from qualifying purchases. If you buy through links on this page, we may earn a commission at no extra cost to you. Learn more.

Instinct® 3 – 50 mm, AMOLED specifications

The figures that decide a purchase, followed by every line Garmin publishes.

Battery life
Smartwatch: Up to 24 days (9 days always-on) Battery Saver Watch Mode: Up to 30 days GPS Only: Up to 40 hours All Satellite Systems: Up to 32 hours All Satellite Systems + Multi-Band: Up to 30 hours* Max Battery GPS: Up to 86 hours Expedition GPS: Up to 20 days *assuming typical use with SatIQ technology
Display
1.3" (33 mm) diameter
Resolution
416 x 416 pixels
Water rating
10 ATM
Case material
fiber-reinforced polymer
Bezel
fiber-reinforced polymer/aluminum
Glass
Chemically Strengthened Glass
Strap
silicone
Storage
4 GB
Charging
Garmin proprietary plug charger

Full specification sheet

515 published lines across 24 groups, unedited

Overview

Family
Garmin

General

Timer
Stopwatch
Time/date
Alarm clock
Battery life
Smartwatch: Up to 24 days (9 days always-on) Battery Saver Watch Mode: Up to 30 days GPS Only: Up to 40 hours All Satellite Systems: Up to 32 hours All Satellite Systems + Multi-Band: Up to 30 hours* Max Battery GPS: Up to 86 hours Expedition GPS: Up to 20 days *assuming typical use with SatIQ technology
Battery type
Lithium ion
Display Size
1.3" (33 mm) diameter
Display type
AMOLED (always-on)
Water rating
10 ATM
Case material
fiber-reinforced polymer
Color display
GPS Time Sync
Garmin Pay™
Lens Material
Chemically Strengthened Glass
Bezel Material
fiber-reinforced polymer/aluminum
LED flashlight
Memory/History
4 GB
Multi-band GPS
Strap material
silicone
Charging method
Garmin proprietary plug charger
Training status
Large font option
Display resolution
416 x 416 pixels
Training readiness
Sunrise/sunset times
Pulse Ox blood oxygen
Sleep score and insights
Automatic daylight saving time
Battery life (smartwatch mode)
Up to 24 days (9 days always-on)
QuickFit® watch band compatible
yes (26 mm)

Sensors

GPS
Stocks
Compass
GLONASS
Galileo
Calendar
Passcode
Gyroscope
Thermometer
Connectivity
Bluetooth®, ANT+®
Garmin Share
Accelerometer
Find My Phone
Morning report
Red shift mode
Weather forecasts
SatIQ™ Technology
Smart Notifications
Barometric altimeter
Smart trainer control
Smartphone compatibility
iPhone®, Android™
Controls smartphone music
On-device Connect IQ™ Store
Pairs with Garmin Connect™ mobile
Compatible with Garmin Messenger app
Pulse Ox Blood Oxygen Saturation Monitor
Find My Garmin (helps locate lost device)
Garmin Elevate™ wrist heart rate monitor
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)

Variant

Color
Fern Green with Fern Green Band
Version
Instinct 3 – AMOLED
Case Size
50 mm
Solar Charging
Available Colors
Fern Green with Fern Green Band; Black with Charcoal Band

Product Info

Price
399.99 USD
Main SKU
010-03020-00
Product ID
1622337
Sale Price
349.99 USD
Product Name
Instinct® 3 – 50 mm, AMOLED
Release Date
1/6/2025
Product Variation
Black with Charcoal Band

Clock Features

Sleep
yes (advanced)
Timer
Hydration
yes (in Garmin Connect™ and optional Connect IQ™ widget)
Stopwatch
Time/date
Breathwork
Alarm clock
Fitness age
Sleep coach
GPS Time Sync
Health status
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
Sunrise/sunset times
Abnormal heart rate alerts
yes (high and low)
Relaxation breathing timer
Automatic daylight saving time
Body Battery™ energy monitor
Heart rate (constant, every second)

Gaming Features

Gaming Activity
Workout tutorials
Easy break planning
Truck driver workouts
GameOn™ app compatible
Truck plaza loyalty programs
Compatible with dēzl™ OTR truck navigators

Cycling Features

Courses
MTB Grit & Flow
Race an activity
Pool swim workouts
Power meter compatible
Time and distance alerts
Advanced cycling dynamics
Auto rest (pool swim only)
Drill logging (pool swim only)
Compatible with Varia™ lights
Countdown start (pool swim only)
FTP (Functional Threshold Power)
Underwater wrist-based heart rate
"Repeat on" rest timer (pool swim only)
Speed and cadence sensor support (w/sensor)
Basic rest timer (up from 0) (pool swim only)
Bike lap and lap maximum power (with power sensor)
Compatible with Varia™ radar (rear-facing radar)
Compatible with Vector™ and Rally™ (power meters)
Compatible with Varia Vision™ (head-mounted display)
Stroke type detection (freestyle, backstroke, breaststroke, butterfly) (pool swim only)
Pool swim metrics (lengths, distance, pace, stroke count, swim efficiency (SWOLF), calories)
Alerts (triggers alarm when you reach goals including time, distance, heart rate or calories)
Open-water swim metrics (distance, pace, stroke count/rate, stroke distance, swim efficiency (SWOLF), calories)
Heart rate from external HRM (real-time during rests, interval and session stats during rests, and automatic heart rate download post-swim)

Golfing Features

Tides
Sight 'N Go
Tide glance
UltraTrac mode
Vertical speed
GPS coordinates
Area calculation
Tournament legal
Digital scorecard
Elevation profile
Garmin AutoShot™
Projected waypoint
Round timer/odometer
Total ascent/descent
Future elevation plot
Auto CourseView updates
Distance to destination
Expedition GPS Activity
Sun and moon information
Yardage to layups/doglegs
Hazards and course targets
Pairs with Garmin Golf app
Green View with manual pin position
Barometric trend indicator with storm alert
CT10 Automatic club tracking compatible (requires accessory)
Yardage to F/M/B (distance to front, middle and back of green)
Stat tracking (strokes, putts per round, greens and fairways hit)
Measures shot distance (calculates exact yardage for shots from anywhere on course)
manual

Running Features

Run workouts
Running power
Race predictor
Foot pod capable
Running dynamics
Tournament legal
Digital scorecard
Lactate threshold
yes (with compatible accessory)
Garmin AutoShot™
Grade-adjusted pace
Round timer/odometer
Trail run auto climb
Performance condition
Auto CourseView updates
Run/Walk/Stand detection
Stride length (real time)
Yardage to layups/doglegs
Hazards and course targets
Pairs with Garmin Golf app
PacePro™ Pacing Strategies
Vertical oscillation and ratio
Ground contact time and balance
yes (GCT balance with accessory)
GPS-based distance, time and pace
Green View with manual pin position
Cadence (provides real-time number of steps per minute)
CT10 Automatic club tracking compatible (requires accessory)
Yardage to F/M/B (distance to front, middle and back of green)
Stat tracking (strokes, putts per round, greens and fairways hit)
Measures shot distance (calculates exact yardage for shots from anywhere on course)
manual

What You'll Love

Weight
59 g
Battery life
Smartwatch: Up to 24 days (9 days always-on) Battery Saver Watch Mode: Up to 30 days GPS Only: Up to 40 hours All Satellite Systems: Up to 32 hours All Satellite Systems + Multi-Band: Up to 30 hours* Max Battery GPS: Up to 86 hours Expedition GPS: Up to 20 days *assuming typical use with SatIQ technology
Battery type
Lithium ion
Display Size
1.3" (33 mm) diameter
Display type
AMOLED (always-on)
Water rating
10 ATM
Case material
fiber-reinforced polymer
Color display
Garmin Pay™
Lens material
Chemically Strengthened Glass
Physical size
50 x 50 x 14.4 mm Fits wrists with a circumference of 141-213 mm
Bezel material
fiber-reinforced polymer/aluminum
LED flashlight
Memory/History
4 GB
Multi-band GPS
Strap material
silicone
Charging method
Garmin proprietary plug charger
Training status
Large font option
Display resolution
416 x 416 pixels
Training readiness
Pulse Ox blood oxygen
Sleep score and insights
Battery life (smartwatch mode)
Up to 24 days (9 days always-on)
QuickFit® watch band compatible
yes (26 mm)

Activity Profiles

Gym
Strength, HIIT, Cardio, Elliptical Training, Stair Stepping, Floor Climbing, Indoor Rowing
Swim
Pool Swimming, Open Water Swimming
Cycling
Biking, Road Biking, Mountain Biking, Gravel Biking, Bike Commuting, Bike Touring, eBiking, eMountain Biking, Indoor Biking, Cyclocross, BMX
Wellness
Walking, Indoor Walking, Pilates, Yoga
Assistance
Multisport
Triathlon
In the ring
Boxing, Mixed Martial Arts
Team sports
Basketball, Volleyball, Field Hockey, Ice Hockey, Football/Soccer, American Football, Lacrosse, Rugby, Ultimate Disc, Cricket, Softball, Baseball
Motor sports
Motorcycling, Overlanding, Motocrossing, ATVing, Snowmobiling
On the Water
Stand Up Paddleboarding, Rowing, Kayaking, Surfing, Kiteboarding, Windsurfing, Fishing, Boating, Water Skiing, Snorkeling, Wakeboarding, Wakesurfing, Tubing, Whitewater
Racket sports
Tennis, Pickleball, Badminton, Squash, Table Tennis, Padel, Platform Tennis, Racquetball
Snow & winter
Skiing, Snowboarding, Backcountry Snowboarding, XC Classic Skiing, XC Skate Skiing, Backcountry Skiing, Ice Skating, Snowshoeing
Indoor running
Treadmill Running, Indoor Track Running, Virtual Running
Outdoor running
Running, Outdoor Track Running, Trail Running, Obstacle Racing
Live event sharing
Outdoor recreation
Hiking, Rucking, Indoor Climbing, Bouldering, Climbing, Hunting, Horseback Riding, Golfing, Disc Golf, Archery
Other activity profiles
Tactical, Inline Skating
Incident detection during select activities
Incident detection alert on phone for wearables

Swimming Features

Pool swim workouts
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)
PrePass weigh station notifications and bypass decisions
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)
Heart rate from external HRM (real-time during rests, interval and session stats during rests, and automatic heart rate download post-swim)

Tactical Features

Gaming Activity
XERO™ Locations
Dual grid coordinates
GameOn™ app compatible

Outdoor Recreation

Tides
TracBack®
Sight 'N Go
Tide glance
Back to start
UltraTrac mode
Vertical speed
GPS coordinates
Reference point
Area calculation
Elevation profile
Projected waypoint
Total ascent/descent
Future elevation plot
Distance to destination
Expedition GPS Activity
Sun and moon information
Point-to-point navigation
Bread crumb trail in real time
Barometric trend indicator with Storm Alert

Daily Smart Features

Calendar
Passcode
Connectivity
Bluetooth®, ANT+®
Garmin Share
Find My Phone
Find My Watch
HIIT workouts
VIRB® Remote
Yoga workouts
Morning report
Red shift mode
Cardio workouts
Pilates workouts
Strength workouts
Weather forecasts
Smart Notifications
Smart trainer control
Smartphone compatibility
iPhone®, Android™
Controls smartphone music
Garmin running coach experts
On-screen workout animations
On-device Connect IQ™ Store
On-screen workout muscle maps
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)
Daily suggested workout - Cycling (pace and heart rate based)
Daily suggested workout - Running (pace and heart rate based)
Connect IQ™ (downloadable watch faces, data fields and apps)

Mapping & Navigation

Courses
MTB Grit & Flow
Race an activity
Power meter compatible
Advanced cycling dynamics
Compatible with Varia™ lights
FTP (Functional Threshold Power)
Speed and cadence sensor support (w/sensor)
Bike lap and lap maximum power (with power sensor)
Compatible with Varia™ radar (rear-facing radar)
Compatible with Vector™ and Rally™ (power meters)
Compatible with Varia Vision™ (head-mounted display)
Alerts (triggers alarm when you reach goals including time, distance, heart rate or calories)

Activity Tracking Features

% HRR
% HR max
HR zones
HR alerts
Shortcuts
TrueUp™
HRV status
Load ratio
Manual lap
Move IQ™
Rest timer
Auto max HR
Auto scroll
Finish time
HR calories
Step counter
Voice alerts
Custom alerts
Physio TrueUp
Recovery time
Training load
VO2 Max (run)
Floors climbed
Calories burned
Course guidance
Training effect
Virtual Partner
Workout benefit
Race an Activity
Advanced workouts
Distance traveled
Intensity minutes
Interval training
Race glance/widget
Training load focus
VO2 Max (trail run)
Automatic rep counting
GPS speed and distance
Configurable lap alerts
Customizable data pages
Unified training status
Touch and/or button lock
Activity history on watch
Multisport auto transition
Downloadable training plans
Training effect (anaerobic)
Manual multisport activities
HRM running pace and distance
Heat and altitude acclimation
Customizable activity profiles
Garmin Connect™ Challenges app
yes (optional Connect IQ app)
Auto Pause® automatic timer halt
Respiration rate (during exercise)
yes (with compatible accessory)
Auto Lap® interval tracking feature
Primary benefit (training effect labels)
Power modes (customizable in-activity battery settings)
Move alerts (displays on device after a period of inactivity)
HR broadcast (broadcasts HR data over ANT+® to paired devices)
Auto goal (learns your activity level and assigns a daily step goal)
Improved interval (includes open repeats, intervals data page, rest screen and auto detection)

Workout and Training Plans

Gym
Strength, HIIT, Cardio, Elliptical Training, Stair Stepping, Floor Climbing, Indoor Rowing, Jump Roping
Swim
Pool Swimming, Open Water Swimming
Cycling
Biking, Road Biking, Mountain Biking, Gravel Biking, Bike Commuting, Bike Touring, eBiking, eMountain Biking, Indoor Biking, Cyclocross, BMX
Wellness
Walking, Pilates, Yoga, Indoor Walking, Mobility
Multisport
Triathlon, Swimrunning
In the ring
Boxing, Mixed Martial Arts
Team sports
Basketball, Volleyball, Field Hockey, Ice Hockey, Football/Soccer, American Football, Lacrosse, Rugby, Ultimate Disc, Cricket, Softball, Baseball
Motor sports
Motorcycling, Overlanding, Motocrossing, ATVing, Snowmobiling
On the water
Stand Up Paddleboarding, Rowing, Kayaking, Surfing, Kiteboarding, Windsurfing, Fishing, Boating, Water Skiing, Snorkeling, Wakeboarding, Wakesurfing, Tubing, Whitewater
HIIT workouts
Racket sports
Tennis, Pickleball, Badminton, Squash, Table Tennis, Padel, Platform Tennis, Racquetball
Yoga workouts
Indoor running
Treadmill Running, Indoor Track Running, Virtual Running
Cardio workouts
Outdoor running
Running, Outdoor Track Running, Trail Running, Obstacle Racing
Snow and winter
Skiing, Snowboarding, Backcountry Snowboarding, XC Classic Skiing, XC Skate Skiing, Backcountry Skiing, Ice Skating, Snowshoeing
Pilates workouts
Strength workouts
Outdoor recreation
Hiking, Rucking, Indoor Climbing, Bouldering, Climbing, Hunting, Horseback Riding, Golfing, Disc Golf, Archery
Other activity profiles
Tactical, Inline Skating
Garmin Running Coach Experts
On-screen workout animations
On-screen workout muscle maps
Garmin Coach - Prebuilt Cycling Plans
Daily Suggested Workout - Cycling (Pace and Heart Rate Based)
Daily Suggested Workout - Running (Pace and Heart Rate Based)

Health & Wellness Monitoring

GPS
QZSS
Sleep
yes (advanced)
BeiDou
Compass
GLONASS
Galileo
Gyroscope
Hydration
yes (in Garmin Connect™ and optional Connect IQ™ widget)
Breathwork
Fitness age
Sleep coach
Thermometer
Accelerometer
Nap detection
All-day stress
Women's health
yes (in Garmin Connect™ and optional Connect IQ™ widget)
Health snapshot
Respiration rate
Resting heart rate
SatIQ™ technology
Barometric altimeter
Breathing variations
Relaxation reminders
Abnormal heart rate alerts
yes (high and low)
Relaxation breathing timer
Body Battery™ energy monitor
Pulse Ox blood oxygen saturation monitor
Garmin Elevate™ wrist heart rate monitor
Wrist-based heart rate (constant, every second)

Safety and Tracking Features

Assistance
XERO™ Locations
Live Event Sharing
Dual grid coordinates
Incident Detection during select activities
Incident detection alert on phone for wearables

Trucking Smartwatch 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)

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
Shortcuts
HRV status
Load ratio
Manual lap
Rest timer
Auto max HR
Auto scroll
Finish time
HR calories
Run workouts
Voice alerts
Custom alerts
Physio TrueUp
Recovery time
Running power
Training load
VO2 Max (Run)
Race predictor
Course guidance
Training effect
Virtual Partner
Workout benefit
Foot pod capable
Race an Activity
Running dynamics
Advanced workouts
Interval training
Lactate threshold
yes (with compatible accessory)
Race glance/widget
Grade-adjusted pace
Training load focus
VO2 Max (Trail Run)
Trail run auto climb
Performance condition
GPS speed and distance
Configurable lap alerts
Customizable data pages
Unified training status
Run/walk/stand detection
Touch and/or button lock
Activity history on watch
Stride length (real time)
Multisport auto transition
Downloadable training plans
Training effect (anaerobic)
Manual multisport activities
PacePro™ pacing strategies
HRM running pace and distance
Heat and altitude acclimation
Customizable activity profiles
Vertical oscillation and ratio
Ground contact time and balance
yes (GCT balance with accessory)
Auto Pause® automatic timer halt
GPS-based distance, time and pace
Respiration rate (during exercise)
yes (with compatible accessory)
Auto Lap® interval tracking feature
Primary benefit (Training Effect labels)
Cadence (provides real-time number of steps per minute)
Power Modes - customizable in-activity battery settings
HR broadcast (broadcasts HR data over ANT+® to paired devices)
Improved interval (includes open repeats, intervals data page, rest screen and auto detection)

Instinct® 3 – 50 mm, AMOLED — Frequently Asked Questions

Will the Garmin Instinct® 3 – 50 mm, AMOLED fit my wrist?

The Garmin Instinct® 3 – 50 mm, AMOLED looks balanced on flat wrist widths of roughly 53–71mm (about 14.2–19.0cm circumference). Drag the slider above to check it against your own measurement.

What size band does the Garmin Instinct® 3 – 50 mm, AMOLED take?

26mm. Any 26mm strap fits, so you are not limited to Garmin's own bands — look for a quick-release fitting if you want to swap without tools.

How long does the Garmin Instinct® 3 – 50 mm, AMOLED battery last?

Between 30 hours and 30 days per charge, depending on the power mode. Garmin rates Battery Saver at 30 days and All Satellite Systems + Multi-Band at 30 hours; the chart above lists all 7 modes.

How does the Garmin Instinct® 3 – 50 mm, AMOLED battery compare with other Garmin watches?

At 30 days in everyday use it ranks #84 of the 249 Garmin watches in our database — the top 34% of the range. The full ranking, including GPS and power-saving figures, is on our Garmin battery life comparison.

Is the Garmin Instinct® 3 – 50 mm, AMOLED thick for a 50mm watch?

At 14.4mm, middle of the pack for thickness at this width. Thickness, not case width, is what decides whether a watch catches on a shirt cuff.

Should I get the 45mm or 50mm Instinct 3?

The Instinct 3 comes in 2 case sizes — 45mm, 50mm. Which one suits you depends on the flat width of your wrist rather than preference: the larger sizes need a wider wrist to sit inside the edge. Set your measurement in the size picker above and each variant reports its clearance in millimetres.

What other watches are the same size as the Garmin Instinct® 3 – 50 mm, AMOLED?

Rogbid Tank G1, Noise NoiseFit Force, Gionee StylFit GSW7, Zeblaze Thor 5 Pro all sit within half a millimetre of the Garmin Instinct® 3 – 50 mm, AMOLED's 50mm case, so they cover the same amount of wrist.