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Forerunner® 945
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Premium GPS running/triathlon smartwatch with music

Premium multisport GPS watch with wrist-based heart rate and Pulse Ox

Premium solar-powered multisport GPS watch with pace guidance, wrist-based heart rate, Pulse Ox and more

Premium solar-powered multisport GPS watch with pace guidance, wrist-based heart rate, Pulse Ox, routable maps, music and more

General

Lens material Corning® Gorilla® Glass DX Corning® Gorilla® Glass DX Power Glass™ Power Glass™
Bezel material fibre-reinforced polymer Stainless steel Stainless steel Stainless steel or Diamond-Like Carbon (DLC) coated titanium
Case material Fibre-reinforced polymer with metal rear cover Fibre-reinforced polymer with metal rear cover Fibre-reinforced polymer with metal rear cover
QuickFit watch band compatible Yes (22 mm) Included (22 mm) 22 mm band included 22 mm band included
Strap material silicone Silicone Silicone Silicone or titanium
Physical size 47 x 47 x 13.7 mm

Fits wrists with a circumference of 130-220 mm

47 x 47 x 14.70 mm

Fits wrists with the following circumference:
Silicone band: 125-208 mm
Leather band: 132-210 mm
Fabric band: 132-210 mm
Metal band: 132-215 mm

47 x 47 x 15.1 mm

Fits wrists with the following circumference:
Silicone band: 125-208 mm
Leather band: 132-210 mm
Fabric band: 132-210 mm
Metal band: 132-215 mm

47 x 47 x 15.1 mm

Fits wrists with the following circumference:
Silicone band: 125-208 mm
Leather band: 132-210 mm
Fabric band: 132-210 mm
Metal band: 132-215 mm

Colour display
Display Size 1.2" (30.4 mm) diameter 1.30" ( 33.02 mm) diameter 1.3 inches, 33.02 mm diameter 1.3 inches, 33.02 mm diameter
Display Resolution 240 x 240 pixels 260 x 260 pixels 260 x 260 pixels 260 x 260 pixels
Display Type sunlight-visible, transflective memory-in-pixel (MIP) Sunlight-visible, transflective memory-in-pixel (MIP) Sunlight-visible, transflective memory-in-pixel (MIP) Sunlight-visible, transflective memory-in-pixel (MIP)
Weight 50 g Steel: 80 g (case only: 57 g) 85 g (case only: 62 g)

Steel: 85 g (case only: 62 g)
Titanium: 72 g (case only: 48 g)

Water rating 5 ATM 10 ATM 10 ATM 10 ATM
Battery life Smartwatch mode: up to 2 weeks
GPS mode with music: up to 10 hours
GPS mode without music: Up to 36 hours
Smartwatch: up to 14 days
GPS: up to 36 hours
Max battery GPS mode: up to 72 hours
Expedition GPS mode: up to 28 days
Battery saver watch mode: up to 48 days

Smartwatch: Up to 14 days plus 2 days*
GPS: Up to 36 hours plus 4 hours**
GPS and music: Up to 10 hours
Max battery GPS mode: 72 hours plus 21 hours**
Expedition GPS activity: 28 days plus 8 days*
Battery saver watch mode: 48 days plus 32 days*

* Solar charging, assuming all-day wear with 3 hours per day outside in 50,000 lux conditions
** Solar charging, assuming use in 50,000 lux conditions

Smartwatch: Up to 14 days/16 days with solar*
Battery saver watch mode: Up to 48 days/80 days with solar*
GPS: Up to 36 hours/40 hours with solar**
GPS and music: Up to 10 hours
Max battery GPS mode: Up to 72 hours/93 hours with solar**
Expedition GPS activity: Up to 28 days/36 days with solar*

* Solar charging, assuming all-day wear with 3 hours per day outside in 50,000 lux conditions
** Solar charging, assuming all-day wear with 3 hours per day outside in 50,000 lux conditions

Memory/history 200 hours of activity data 64 MB 64 MB 32 GB

Clock features

Time/date
GPS time sync
Automatic daylight saving time
Alarm clock
Timer
Stopwatch
Sunrise/sunset times

Health monitoring

Wrist-based heart rate (constant, every second)
Daily Resting Heart Rate
Abnormal Heart Rate Alerts Yes (high and low) Yes (high and low) Yes (high and low)
Respiration rate (24x7)
Pulse Ox blood oxygen saturation Yes (spot-check, and optional all-day acclimation and in sleep)
Fitness age Yes (in app) Yes (in app) Yes (in app) Yes (in app)
Body Battery™ energy monitor
All-day stress tracking
Relaxation breathing timer
Sleep Yes (Advanced) Yes (Advanced) Yes (Advanced)
Sleep score and insights
Hydration Yes (in Garmin Connect™ and optional Connect IQ™ widget) Yes (in Garmin Connect™ and optional Connect IQ™ widget) Yes (in Garmin Connect™ and optional Connect IQ™ widget) Yes (in Garmin Connect™ and optional Connect IQ™ widget)
Women's health Yes (in Garmin Connect™ and optional Connect IQ™ widget) Yes (in Garmin Connect™ and optional Connect IQ™ widget) Yes (in Garmin Connect™ and optional Connect IQ™ widget) Yes (in Garmin Connect™ and optional Connect IQ™ widget)

Sensors

GPS
GLONASS
Galileo
Garmin Elevate wrist heart rate monitor
Barometric altimeter
Compass
Gyroscope
Accelerometer
Thermometer
Pulse Ox Blood Oxygen Saturation Monitor Yes (with Acclimation) Yes (with Acclimation) Yes (with Acclimation)

Daily smart features

Connectivity Bluetooth®, ANT+®, Wi-Fi® Bluetooth®, ANT+® Bluetooth® Smart, ANT+® Bluetooth®, ANT+®, Wi-Fi®
Connect IQ (downloadable watch faces, data fields, widgets and apps)
Smart Notifications
Text response/reject phone call with text (Android™ only)
Calendar
Weather
Battery Saver - customisable low power watch
Controls smartphone music
Plays and controls watch music
Music storage Up to 1,000 songs Up to 2,000 songs
Find my phone
Find my watch
VIRB® camera remote
Smartphone compatibility iPhone®, Android iPhone®, Android™ iPhone®, Android™ iPhone®, Android™
Pairs with Garmin Golf app
Compatible with Garmin Connect Mobile
Garmin Pay™

Safety and tracking features

LiveTrack
Group LiveTrack
Live Event Sharing Android™ Only
Incident Detection during select activities
Incident detection alert on phone for wearables
Assistance

Tactical features

Dual grid coordinates

Activity tracking features

Step counter
Move bar (displays on device after a period of inactivity; walk for a couple of minutes to reset it)
Auto goal (learns your activity level and assigns a daily step goal)
Calories burned
Floors climbed
Distance travelled
Intensity minutes
TrueUp™
Move IQ™
Garmin Connect™ Challenges app Yes (optional Connect IQ app) Yes (optional Connect IQ app) Yes (optional Connect IQ app)

Fitness equipment/gym

Automatic rep counting
Cardio workouts
Available gym activity profiles Strength, cardio and elliptical training, stair stepping, indoor rowing and yoga Strength, cardio and elliptical training, stair stepping, floor climbing, indoor rowing, pilates and yoga Strength, cardio and elliptical training, stair stepping, floor climbing, indoor rowing, Pilates and yoga Strength, cardio and elliptical training, stair stepping, floor climbing, indoor rowing, Pilates and yoga
Strength workouts
Yoga workouts
Pilates workouts
On-screen workout animations

Training, planning and analysis features

HR zones
HR alerts
HR calories
% HR max
% HRR
Recovery time
Auto max HR
HRV status
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) Yes (with compatible accessory) Yes (with compatible accessory) Yes (with compatible accessory)
HR broadcast (broadcasts HR data over ANT+ to paired devices) Yes (using ANT+ or BLE)
Respiration rate (during exercise) Yes (with compatible accessory) Yes (with compatible accessory) Yes (with compatible accessory)
GPS speed and distance
Customisable screen(s)
Customisable activity profiles
Auto Pause®
Interval training
Advanced workouts
Downloadable training plans
Power Modes - customisable in-activity battery settings
HRM running pace and distance
Auto Lap®
Manual lap
Configurable lap alerts
Heat and altitude acclimation
VO2 Max (Run)
Training status (lets you see if you’re training effectively by tracking your training history and fitness level trend) Improved Improved
Training load (your total training load for the last 7 days calculated from estimated EPOC)
Training load focus
Training effect (aerobic)
Training effect (anaerobic)
Primary benefit (Training Effect labels)
Improved recovery time
Daily suggested workouts
Customisable alerts
Audio prompts
Finish time
Virtual partner
Race an activity
Auto multisport activities
Multi-sport
Course guidance
Garmin Live Segments
Strava Live Segments
Round-trip course creator (running/cycling)
Trendline™ popularity routing
Touch and/or button lock
Hot keys
Auto scroll
Activity history on watch
Physio TrueUp

Running features

Available run profiles Running, indoor track running, treadmill running, trail running Running, treadmill running, trail running Running, treadmill running, indoor track running, trail running, virtual running Running, treadmill running, indoor track running, trail running, virtual running
GPS-based distance, time and pace
Running dynamics Yes (with compatible accessory) Yes (with compatible accessory) Yes (with compatible accessory) Yes (with compatible accessory)
Vertical oscillation and ratio Yes (with compatible accessory) Yes (with compatible accessory) Yes (with compatible accessory) Yes (with compatible accessory)
Ground contact time and balance Yes (with compatible accessory) Yes (with compatible accessory) Yes (with compatible accessory) Yes (with compatible accessory)
Stride length (real time) Yes (with compatible accessory) Yes (with compatible accessory) Yes (with compatible accessory) Yes (with compatible accessory)
Cadence (provides real-time number of steps per minute)
Performance condition
Lactate threshold Yes (with compatible accessory) Yes (with compatible accessory) Yes (with compatible accessory) Yes (with compatible accessory)
PacePro™ Pacing Strategies Yes (with preloaded course) Yes (with preloaded course)
Run workouts
Trail run auto climb
Race predictor
Foot pod capable
Run/Walk/Stand detection

Golfing features

Preloaded with 42,000 courses worldwide No (downloadable from phone) No (downloadable from phone)
Yardage to F/M/B (distance to front, middle and back of green)
Yardage to layups/doglegs
Measures shot distance (calculates exact yardage for shots from anywhere on course) Automatic Automatic Automatic Automatic
Digital scorecard
Custom targets
Stat tracking (strokes, putts per round, greens and fairways hit)
Garmin AutoShot™
Full vector map
Auto CourseView updates
Green View with manual pin position
Hazards and course targets
PinPointer
PlaysLike distance
Handicap scoring
TruSwing™ compatible
Round timer/odometer
Automatic club tracking compatible (requires accessory)

Outdoor recreation

Available outdoor recreation profiles Hiking, climbing, skiing, snowboarding, XC skiing, stand-up paddleboarding, rowing, kayaking Trail running, running, hiking, climbing, mountain biking, skiing, snowboarding, XC skiing, stand-up paddleboarding, rowing, kayaking, Jumpmaster, tactical Hiking, indoor and outdoor climbing, bouldering, surfing, mountain biking, skiing, snowboarding, XC skiing, stand up paddleboarding, rowing, kayaking, Jumpmaster, tactical Hiking, indoor and outdoor climbing, bouldering, surfing, mountain biking, skiing, snowboarding, XC skiing, stand up paddleboarding, rowing, kayaking, Jumpmaster, tactical
Point-to-point navigation
Breadcrumb trail in real time
Back to start
TracBack®
UltraTrac mode
Around Me mode
Reference point
Elevation profile
Distance to destination
Barometric trend indicator with storm alert
ClimbPro™ ascent planner Yes (with preloaded course) Yes (with preloaded course)
Vertical speed
Total ascent/descent
Future elevation plot Yes (with preloaded course) Yes (with preloaded course)
PRELOADED TOPOGRAPHIC MAPS
Preloaded road and trail maps
Preloaded ski resort maps
Downloadable cartography support
GPS coordinates
Sight 'N Go
Area calculation Yes (via Connect IQ™) Yes (via Connect IQ™) Yes (via Connect IQ™) Yes (via Connect IQ™)
Hunt/fish calendar Yes (via Connect IQ™) Yes (via Connect IQ™) Yes (via Connect IQ™) Yes (via Connect IQ™)
Projected waypoint
Sun and moon information Yes (via Connect IQ™) Yes (via Connect IQ™) Yes (via Connect IQ™) Yes (via Connect IQ™)
XERO Locations
Expedition GPS Activity
Tides Yes (via Connect IQ™) Yes (via Connect IQ™) Yes (via Connect IQ™)

Cycling features

Garmin cycle map (routable cycling-specific street map)
Available cycling profiles Biking, indoor biking, mountain biking Biking, indoor biking, mountain biking, triathlon Biking, indoor biking, mountain biking, triathlon Biking, indoor biking, mountain biking, triathlon
Alerts (triggers alarm when you reach goals including time, distance, heart rate or calories)
Courses
MTB Grit & Flow
Bike lap and lap maximum power (with power sensor)
Race an activity
FTP (Functional threshold power) Yes (with compatible accessory) Yes (with compatible accessory) Yes (with compatible accessory) Yes (with compatible accessory)
Compatible with Vector™ and Rally™ (power meters)
Power meter compatible
Advanced cycling dynamics
Compatible with Varia Vision™ (head-mounted display)
Compatible with Varia™ radar (rear-facing radar)
Compatible with Varia™ lights
Speed and cadence sensor support (w/sensor)

Swimming features

Available swim profiles Pool swimming, open water swimming Pool swimming, open water swimming, swimming/running Pool swimming, open water swimming, swimming/running Pool swimming, open water swimming, swimming/running
Open-water swim metrics (distance, pace, stroke count/rate, stroke distance, swim efficiency (SWOLF), calories)
Pool swim metrics (lengths, distance, pace, stroke count, swim efficiency (SWOLF), calories)
Stroke type detection (freestyle, backstroke, breaststroke, butterfly) (pool swim only)
Drill logging (pool swim only)
Basic rest timer (up from 0) (pool swim only)
"Repeat on" rest timer (pool swim only)
Auto rest (pool swim only)
Time and distance alerts
Pacing alerts (pool swim only)
Countdown start
Pool swim workouts
Critical swim speed
Underwater wrist-based heart rate
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) Yes (with HRM-Tri, HRM-Swim, HRM-Pro or HRM-Pro Plus) Yes (with HRM-Tri and HRM-Swim) Yes (with HRM-Tri, HRM-Swim, HRM-Pro or HRM-Pro Plus)

Kid activity tracking features

Toe-to-Toe™ Challenges app Yes (optional Connect IQ Toe-to-Toe™ Challenges app) Yes (optional Connect IQ Toe-to-Toe™ Challenges app) Yes (optional Connect IQ Toe-to-Toe™ Challenges app)