Garmin · 2021
Forerunner 945 LTE Size, Dimensions & Wrist Fit
The Forerunner 945 LTE looks in proportion on wrists of 16 cm (6.3 in) and up round, and fills the wrist at 16.5–18.5 cm (lug-to-lug estimated at ≈51mm; Garmin does not publish it).
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Does the Forerunner 945 LTE fit your wrist?
The 44.4mm · LTE suits wrists of about 16 cm and up round; the 47mm, 16.5 cm and up. Both work from 16.5 to 22.5 cm, where it is a choice between more skin either side (the 44.4mm · LTE) and a case that fills the wrist (the 47mm). Under 16.5 cm only the 44.4mm · LTE's lugs stay on the wrist.
| Wrist round (mm left each side) | 44.4mm · LTE≈51mm lug to lug, est. | 47mm≈54mm lug to lug, est. |
|---|---|---|
| 14 cm / 5.5 in | Overhangs (2.9mm over) | Overhangs (4.4mm over) |
| 15 cm / 5.9 in | Overhangs (1.3mm over) | Overhangs (2.8mm over) |
| 16 cm / 6.3 in | Bold (0.3mm) | Overhangs (1.2mm over) |
| 17 cm / 6.7 in | Sweet spot (1.9mm) | Bold (0.4mm) |
| 18 cm / 7.1 in | Sweet spot (3.5mm) | Sweet spot (2mm) |
| 19 cm / 7.5 in | Balanced (5.1mm) | Sweet spot (3.6mm) |
| 20 cm / 7.9 in | Balanced (6.8mm) | Balanced (5.3mm) |
Which Forerunner 945 size fits you?
44.4mm · LTEViewing
44.4mm · 13.9mm thick · 49g
47mm
47mm · 13.7mm thick · 50g
View this sizeThe Forerunner 945 LTE in short
- The 47mm version is 2.6mm wider, 0.2mm thinner and 1g heavier.
- Between 7 hours and 2 weeks per charge depending on the power mode — smartwatch at best, gps with music and lte livetrack at worst.
- Water rated to 5 ATM.
- 13.9mm thick. Middle of the pack for thickness at this width.
- 1.2" (30.4 mm) diameter Sunlight-visible, transflective memory-in-pixel (MIP) display.
Compare the Forerunner 945 LTE head to head
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Forerunner 945 LTE battery life
Runtime by power mode
- Smartwatch2 weeks
- GPS without music35 hours
- GPS with music12 hours
- GPS with LTE LiveTrack10 hours
- GPS with music and LTE LiveTrack7 hours
Where it ranks among Garmin watches
- Everyday use14 days#146 of 281
- GPS tracking35 hours#98 of 267
2D Dimension Schematics
- Garmin Forerunner 945 LTE 44.4mm × ≈51mm (est.) · 13.9mm thick
3D preview
Garmin Forerunner 945 LTE on a wrist
What size band does the Forerunner 945 LTE take?
Lug width
22mm
Standard spring-bar lugs: any 22mm strap with quick-release pins fits, Garmin's or anyone else's.
Alternatives to the Forerunner 945 LTE
Forerunner 945 LTE specifications
- Battery life
- Smartwatch Mode: Up to 2 weeks GPS mode with music: Up to 12 hours GPS mode with LTE LiveTrack: Up to 10 hours GPS mode with music and LTE LiveTrack: Up to 7 hours GPS mode without music: Up to 35 hours See Details
- Display
- 1.2" (30.4 mm) diameter
- Resolution
- 240 x 240 pixels
- Water rating
- 5 ATM
- Bezel
- fiber-reinforced polymer
- Glass
- Corning® Gorilla® Glass 3 DX
- Strap
- silicone
- Storage
- 16 GB
- Charging
- Garmin proprietary plug charger
Show all specificationsGarmin's published specification, for reference · checked September 2026
Overview
- Family
- Garmin
General
- Battery life
- Smartwatch Mode: Up to 2 weeks GPS mode with music: Up to 12 hours GPS mode with LTE LiveTrack: Up to 10 hours GPS mode with music and LTE LiveTrack: Up to 7 hours GPS mode without music: Up to 35 hours See Details
- Display Size
- 1.2" (30.4 mm) diameter
- Color display
- Yes
- Lens Material
- Corning® Gorilla® Glass 3 DX
- Bezel Material
- fiber-reinforced polymer
- Memory/History
- 16 GB
- Strap material
- silicone
- Charging method
- Garmin proprietary plug charger
- Large font option
- Yes
- Display resolution
- 240 x 240 pixels
- QuickFit® watch band compatible
- yes (22 mm compatible)
Sensors
- GPS
- Yes
- Compass
- Yes
- GLONASS
- Yes
- Galileo
- Yes
- Gyroscope
- Yes
- Thermometer
- Yes
- Accelerometer
- Yes
- Barometric altimeter
- Yes
- Pulse Ox Blood Oxygen Saturation Monitor
- Yes
- Garmin Elevate™ wrist heart rate monitor
- Yes
Product Info
- Main SKU
- 010-02383-00
- Product ID
- 698632
- Product Name
- Forerunner® 945 LTE
- Release Date
- 6/2/2021
- Product Variation
- Black Watch Only
Clock Features
- Timer
- Yes
- Stopwatch
- Yes
- Time/date
- Yes
- Alarm clock
- Yes
- GPS Time Sync
- Yes
- Sunrise/sunset times
- Yes
- Automatic daylight saving time
- Yes
Cycling Features
- Courses
- Yes
- MTB Grit & Flow
- Yes
- Race an activity
- Yes
- Power meter compatible
- Yes
- Advanced cycling dynamics
- Yes
- Compatible with Varia™ lights
- Yes
- FTP (Functional Threshold Power)
- yes (with compatible accessory)
- Speed and cadence sensor support (w/sensor)
- Yes
- Cycle Map (routable cycling-specific street map)
- Yes
- Bike lap and lap maximum power (with power sensor)
- Yes
- Compatible with Varia™ radar (rear-facing radar)
- Yes
- Compatible with Vector™ and Rally™ (power meters)
- Yes
- Compatible with Varia Vision™ (head-mounted display)
- Yes
- Alerts (triggers alarm when you reach goals including time, distance, heart rate or calories)
- Yes
Golfing Features
- PinPointer
- Yes
- Handicap scoring
- Yes
- Digital scorecard
- Yes
- Garmin AutoShot™
- Yes
- Round timer/odometer
- Yes
- TruSwing™ compatible
- Yes
- Auto CourseView updates
- Yes
- Yardage to layups/doglegs
- Yes
- Hazards and course targets
- Yes
- Pairs with Garmin Golf app
- Yes
- Green View with manual pin position
- Yes
- Preloaded with 43,000 courses worldwide
- Yes
- Yardage to F/M/B (distance to front, middle and back of green)
- Yes
- Stat tracking (strokes, putts per round, greens and fairways hit)
- Yes
- Measures shot distance (calculates exact yardage for shots from anywhere on course)
- automatic
Running Features
- Hill score
- Yes
- Run workouts
- Yes
- Running power
- Yes
- Race predictor
- Yes
- Foot pod capable
- Yes
- Running dynamics
- Yes
- Lactate threshold
- yes (with compatible accessory)
- Grade-adjusted pace
- Yes
- Trail run auto climb
- Yes
- Performance condition
- Yes
- Stride length (real time)
- Yes
- PacePro™ Pacing Strategies
- Yes
- Vertical oscillation and ratio
- Yes
- Ground contact time and balance
- Yes
- GPS-based distance, time and pace
- Yes
- Cadence (provides real-time number of steps per minute)
- Yes
What You'll Love
- Display type
- Sunlight-visible, transflective memory-in-pixel (MIP)
- Water rating
- 5 ATM
- Garmin Pay™
- Yes
- Music storage
- Yes
- Training status
- Yes
- Built-in mapping
- Yes
- Pulse Ox blood oxygen
- yes (spot-check, and optional all-day acclimation and in sleep)
- Sleep score and insights
- Yes
- Battery life (smartwatch mode)
- Up to 2 weeks
Activity Profiles
- Gym
- Strength, HIIT, Cardio, Elliptical Training, Stair Stepping, Floor Climbing, Indoor Rowing
- Swim
- Pool Swimming, Open Water Swimming
- Cycling
- Biking, Mountain Biking, eBiking, eMountain Biking, Indoor Biking
- Wellness
- Walking, Pilates, Yoga
- Multisport
- Swimming/Running, 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
- On the Water
- Stand Up Paddleboarding, Rowing, Kayaking
- Racket sports
- Tennis, Pickleball, Badminton, Squash, Table Tennis, Padel, Platform Tennis, Racquetball
- Snow & winter
- Skiing, Snowboarding, Backcountry Snowboarding, XC Classic Skiing
- Indoor running
- Treadmill Running, Indoor Track Running, Virtual Running
- Outdoor running
- Running, Outdoor Track Running, Trail Running, Ultra Running
- Outdoor recreation
- Hiking, Climbing, Golfing, Disc Golf
- Other activity profiles
- Inline skating
Swimming Features
- Pool swim workouts
- Yes
- Critical swim speed
- Yes
- Time and distance alerts
- Yes
- Auto rest (pool swim only)
- Yes
- Drill logging (pool swim only)
- Yes
- Pacing alerts (pool swim only)
- Yes
- Countdown start (pool swim only)
- Yes
- Underwater wrist-based heart rate
- Yes
- "Repeat on" rest timer (pool swim only)
- Yes
- Basic rest timer (up from 0) (pool swim only)
- Yes
- Stroke type detection (freestyle, backstroke, breaststroke, butterfly) (pool swim only)
- Yes
- Pool swim metrics (lengths, distance, pace, stroke count, swim efficiency (SWOLF), calories)
- Yes
- Open-water swim metrics (distance, pace, stroke count/rate, stroke distance, swim efficiency (SWOLF), calories)
- Yes
- Heart rate from external HRM (real-time during rests, interval and session stats during rests, and automatic heart rate download post-swim)
- yes (with HRM-Tri, HRM-Swim, HRM-Pro or HRM-Pro Plus)
Tactical Features
- XERO™ Locations
- Yes
- Dual grid coordinates
- Yes
Outdoor Recreation
- TracBack®
- Yes
- Back to start
- Yes
- Fish forecast
- yes (via Connect IQ™)
- Explore Nearby
- Yes
- UltraTrac mode
- Yes
- Vertical speed
- Yes
- GPS coordinates
- Yes
- Area calculation
- yes (via Connect IQ™)
- Elevation profile
- Yes
- Projected waypoint
- Yes
- Total ascent/descent
- Yes
- Future elevation plot
- Yes
- Distance to destination
- Yes
- Sun and moon information
- yes (via Connect IQ™)
- Point-to-point navigation
- Yes
- ClimbPro™ Ascent Planner
- Yes
- Rest Timer (Ultra Run only)
- Yes
- Preloaded road and trail maps
- Yes
- Bread crumb trail in real time
- Yes
- Downloadable cartography support
- Yes
- Barometric trend indicator with Storm Alert
- Yes
Daily Smart Features
- Calendar
- Yes
- Connectivity
- Bluetooth®, ANT+®, Wi-Fi®, LTE (with subscription)
- Find My Phone
- Yes
- Find My Watch
- Yes
- VIRB® Remote
- Yes
- Morning report
- Yes
- Weather forecasts
- Yes
- Smart Notifications
- Yes
- Smartphone compatibility
- iPhone®, Android™
- Controls smartphone music
- Yes
- Plays and controls watch music
- Yes
- Pairs with Garmin Connect™ Mobile
- Yes
- Battery saver (customizable low power watch)
- Yes
- View images from notifications on watch (Android™ only)
- Yes
- Text response/reject phone call with text (Android™ only)
- Yes
- Connect IQ™ (downloadable watch faces, data fields and apps)
- Yes
Activity Tracking Features
- TrueUp™
- Yes
- Move IQ™
- Yes
- Step counter
- Yes
- Floors climbed
- Yes
- Calories burned
- Yes
- Distance traveled
- Yes
- Intensity minutes
- Yes
- Automatic rep counting
- Yes
- Garmin Connect™ Challenges app
- yes (optional Connect IQ app)
- Move alerts (displays on device after a period of inactivity)
- Yes
- Auto goal (learns your activity level and assigns a daily step goal)
- Yes
Workout and Training Plans
- Yoga workouts
- Yes
- Cardio workouts
- Yes
- Pilates workouts
- Yes
- Strength workouts
- Yes
- On-screen workout animations
- Yes
- On-screen workout muscle maps
- Yes
Health & Wellness Monitoring
- Sleep
- yes (advanced)
- Hydration
- yes (in Garmin Connect™ and optional Connect IQ™ widget)
- Breathwork
- Yes
- Fitness age
- yes (in app)
- Nap detection
- Yes
- All-day stress
- Yes
- Women's health
- yes (in Garmin Connect™ and optional Connect IQ™ widget)
- Health snapshot
- Yes
- Respiration rate
- Yes
- Resting heart rate
- Yes
- Relaxation reminders
- Yes
- Abnormal heart rate alerts
- yes (high and low)
- Relaxation breathing timer
- Yes
- Body Battery™ energy monitor
- Yes
- Wrist-based heart rate (constant, every second)
- Yes
Safety and Tracking Features
- Assistance
- Yes
- Assistance Plus
- yes (with LTE subscription; coverage details)
- Live Event Sharing
- Yes
- Incident Detection during select activities
- Yes
- Incident detection alert on phone for wearables
- Yes
Kid Activity Tracking Features
- Toe-to-Toe™ Challenges app
- yes (optional Connect IQ Toe-to-Toe™ Challenges app)
Training, Planning and Analysis Features
- % HRR
- Yes
- % HR max
- Yes
- HR zones
- Yes
- HR alerts
- Yes
- Shortcuts
- Yes
- Manual lap
- Yes
- Auto max HR
- Yes
- Auto scroll
- Yes
- Finish time
- Yes
- HR calories
- Yes
- Voice alerts
- Yes
- Custom alerts
- Yes
- Physio TrueUp
- Yes
- Recovery time
- Yes
- Training load
- Yes
- VO2 Max (Run)
- Yes
- Course guidance
- Yes
- Endurance score
- Yes
- Training effect
- Yes
- Virtual Partner
- Yes
- Race an Activity
- Yes
- Advanced workouts
- Yes
- Interval training
- Yes
- Training load focus
- Yes
- Garmin Live Segments
- Yes
- Strava Live Segments
- Yes
- GPS speed and distance
- Yes
- Improved recovery time
- Yes
- Configurable lap alerts
- Yes
- Customizable data pages
- Yes
- Unified training status
- Yes
- Touch and/or button lock
- Yes
- Activity history on watch
- Yes
- Downloadable training plans
- Yes
- Training effect (anaerobic)
- Yes
- Manual multisport activities
- Yes
- Heat and altitude acclimation
- Yes
- Customizable activity profiles
- Yes
- Trendline™ Popularity Routing
- Yes
- Auto Pause® automatic timer halt
- Yes
- Respiration rate (during exercise)
- yes (with compatible accessory)
- Auto Lap® interval tracking feature
- Yes
- Primary benefit (Training Effect labels)
- Yes
- Round-trip course creator (running/cycling)
- Yes
- HR broadcast (broadcasts HR data over ANT+® to paired devices)
- Yes
- Improved interval (includes open repeats, intervals data page, rest screen and auto detection)
- Yes
- HRV stress test (measures your heart rate variability while standing still, for 3 minutes, to provide you with an estimated stress level; the scale of this is 1 to 100; low scores indicate lower stress levels)
- yes (with compatible accessory)
