Garmin · 2019
Forerunner® 945Size, Dimensions & Wrist Fit
Case Width
47mm
Thickness
13.7mm
Diameter
47mm
Weight
50g
The Garmin Forerunner® 945 sits best on flat wrist widths of about 49–67mm (≈ 13.1–17.9cm wrist circumference). Adjust the slider below to check your wrist.
Does the Forerunner® 945 fit your wrist?
Drag the slider to your wrist width and see the Forerunner® 945 overlaid at true scale. Lug-to-lug — not case diameter — decides whether a watch overhangs your wrist.
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Garmin Forerunner® 945 Full Specifications
Overview1
FamilyGarmin
General10
Battery life
Smartwatch Mode: Up to 2 weeksGPS mode with music: Up to 10 hoursGPS mode without music: Up to 36 hours
Display Size1.2" (30.4 mm) diameter
Color displayYes
Lens MaterialCorning® Gorilla® Glass 3 DX
Bezel Materialfiber-reinforced polymer
Memory/History16 GB
Strap materialsilicone
Charging methodGarmin proprietary plug charger
Display resolution240 x 240 pixels
QuickFit® watch band compatibleyes (22 mm compatible)
Sensors10
GPSYes
CompassYes
GLONASSYes
GalileoYes
GyroscopeYes
ThermometerYes
AccelerometerYes
Barometric altimeterYes
Pulse Ox Blood Oxygen Saturation MonitorYes
Garmin Elevate™ wrist heart rate monitorYes
Product Info5
Main SKU010-02063-10
Product ID621922
Product NameForerunner® 945
Release Date4/30/2019
Product VariationBlue Bundle
Clock Features7
TimerYes
StopwatchYes
Time/dateYes
Alarm clockYes
GPS Time SyncYes
Sunrise/sunset timesYes
Automatic daylight saving timeYes
Cycling Features14
CoursesYes
MTB Grit & FlowYes
Race an activityYes
Power meter compatibleYes
Advanced cycling dynamicsYes
Compatible with Varia™ lightsYes
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 Features13
Digital scorecardYes
Garmin AutoShot™Yes
Round timer/odometerYes
TruSwing™ compatibleYes
Auto CourseView updatesYes
Yardage to layups/doglegsYes
Hazards and course targetsYes
Pairs with Garmin Golf appYes
Green View with manual pin positionYes
Preloaded with 43,000 courses worldwideYes
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 Features14
Run workoutsYes
Race predictorYes
Foot pod capableYes
Running dynamicsyes (with compatible accessory)
Lactate thresholdyes (with compatible accessory)
Trail run auto climbYes
Performance conditionYes
Run/Walk/Stand detectionYes
Stride length (real time)yes (with compatible accessory)
PacePro™ Pacing StrategiesYes
Vertical oscillation and ratioyes (with compatible accessory)
Ground contact time and balanceyes (with compatible accessory)
GPS-based distance, time and paceYes
Cadence (provides real-time number of steps per minute)Yes
What You'll Love9
Display type
Sunlight-visible, transflective memory-in-pixel (MIP)
Water rating5 ATM
Garmin Pay™Yes
Music storageYes
Training statusYes
Built-in mappingYes
Pulse Ox blood oxygen
yes (spot-check, and optional all-day acclimation and in sleep)
Sleep score and insightsYes
Battery life (smartwatch mode)Up to 2 weeks
Activity Profiles10
Gym
Strength, HIIT, Cardio, Elliptical Training, Stair Stepping, Floor Climbing, Indoor Rowing
SwimPool Swimming, Open Water Swimming
CyclingBiking, Mountain Biking, Indoor Biking
WellnessWalking, Pilates, Yoga
MultisportSwimming/Running
On the WaterStand Up Paddleboarding, Rowing, Kayaking
Snow & winterSkiing, Snowboarding, XC Classic Skiing
Indoor running
Treadmill Running, Indoor Track Running, Virtual Running
Outdoor runningRunning, Outdoor Track Running, Trail Running
Outdoor recreationHiking, Climbing, Golfing
Swimming Features14
Pool swim workoutsYes
Critical swim speedYes
Time and distance alertsYes
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 rateYes
"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 Features2
XERO™ LocationsYes
Dual grid coordinatesYes
Outdoor Recreation20
TracBack®Yes
Back to startYes
Fish forecastyes (via Connect IQ™)
Explore NearbyYes
UltraTrac modeYes
Vertical speedYes
GPS coordinatesYes
Area calculationyes (via Connect IQ™)
Elevation profileYes
Projected waypointYes
Total ascent/descentYes
Future elevation plotYes
Distance to destinationYes
Sun and moon informationyes (via Connect IQ™)
Point-to-point navigationYes
ClimbPro™ Ascent PlannerYes
Preloaded road and trail mapsYes
Bread crumb trail in real timeYes
Downloadable cartography supportYes
Barometric trend indicator with Storm AlertYes
Daily Smart Features13
CalendarYes
ConnectivityBluetooth®, ANT+®, Wi-Fi®
Find My PhoneYes
Find My WatchYes
VIRB® RemoteYes
Weather forecastsYes
Smart NotificationsYes
Smartphone compatibilityiPhone®, Android™
Controls smartphone musicYes
Plays and controls watch musicYes
Pairs with Garmin Connect™ MobileYes
Text response/reject phone call with text (Android™ only)Yes
Connect IQ™ (downloadable watch faces, data fields and apps)Yes
Activity Tracking Features11
TrueUp™Yes
Move IQ™Yes
Step counterYes
Floors climbedYes
Calories burnedYes
Distance traveledYes
Intensity minutesYes
Automatic rep countingYes
Garmin Connect™ Challenges appyes (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 Plans5
Yoga workoutsYes
Cardio workoutsYes
Pilates workoutsYes
Strength workoutsYes
On-screen workout animationsYes
Health & Wellness Monitoring11
Sleepyes (advanced)
Hydration
yes (in Garmin Connect™ and optional Connect IQ™ widget)
Fitness ageyes (in app)
All-day stressYes
Women's health
yes (in Garmin Connect™ and optional Connect IQ™ widget)
Respiration rateYes
Resting heart rateYes
Abnormal heart rate alertsyes (high and low)
Relaxation breathing timerYes
Body Battery™ energy monitorYes
Wrist-based heart rate (constant, every second)Yes
Safety and Tracking Features4
AssistanceYes
Live Event SharingAndroid™ Only
Incident Detection during select activitiesYes
Incident detection alert on phone for wearablesYes
Kid Activity Tracking Features1
Toe-to-Toe™ Challenges app
yes (optional Connect IQ Toe-to-Toe™ Challenges app)
Training, Planning and Analysis Features45
% HRRYes
% HR maxYes
HR zonesYes
HR alertsYes
ShortcutsYes
Manual lapYes
Auto max HRYes
Auto scrollYes
Finish timeYes
HR caloriesYes
Voice alertsYes
Custom alertsYes
Physio TrueUpYes
Recovery timeYes
Training loadYes
VO2 Max (Run)Yes
Course guidanceYes
Training effectYes
Virtual PartnerYes
Race an ActivityYes
Advanced workoutsYes
Interval trainingYes
Training load focusYes
Garmin Live SegmentsYes
Strava Live SegmentsYes
GPS speed and distanceYes
Improved recovery timeYes
Configurable lap alertsYes
Customizable data pagesYes
Touch and/or button lockYes
Activity history on watchYes
Downloadable training plansYes
Training effect (anaerobic)Yes
Manual multisport activitiesYes
HRM running pace and distanceYes
Heat and altitude acclimationYes
Customizable activity profilesYes
Trendline™ Popularity RoutingYes
Auto Pause® automatic timer haltYes
Respiration rate (during exercise)yes (with compatible accessory)
Auto Lap® interval tracking featureYes
Primary benefit (Training Effect labels)Yes
Round-trip course creator (running/cycling)Yes
HR broadcast (broadcasts HR data over ANT+® to paired devices)yes (using ANT+ or BLE)
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)
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Forerunner® 945 — Frequently Asked Questions
What size is the Garmin Forerunner® 945?
The Garmin Forerunner® 945 has a 47mm case and is 13.7mm thick.
Will the Garmin Forerunner® 945 fit my wrist?
The Garmin Forerunner® 945 looks balanced on flat wrist widths of roughly 49–67mm (about 13.1–17.9cm circumference). Use the interactive fit tool above to check against your own wrist.
How much does the Garmin Forerunner® 945 weigh?
The Garmin Forerunner® 945 weighs 50g (case only; straps add weight).
What is the best way to compare the Garmin Forerunner® 945 with other watches?
Use our side-by-side comparison tool to see the Garmin Forerunner® 945 next to any other watch — case size, thickness, lug-to-lug and full specs, scaled to real proportions.