Product Comparison

Remove this device from comparison.
$349.99 USD
Remove this device from comparison.
Forerunner® 45
$179.99 USD
Buy Now

You're looking for something sleek and stylish with a bright, AMOLED display. This GPS smartwatch keeps you active and in tune with your body.

You need a basic running watch. If you want to keep it simple, this lightweight GPS smartwatch is for you.


Lens Material

Corning® Gorilla® Glass 3

chemically strengthened glass

Bezel Material

stainless steel

Case material fiber-reinforced polymer with polymer rear cover
Quick Release bands yes (20 mm, Industry standard)
Strap material



Physical size

43.2 x 43.2 x 12.4 mm

Fits wrists with a circumference of 125-190 mm

42 x 42 x 11.4 mm

Fits wrists with a circumference of 129-197 mm

Color display
Display Size 1.2" (30.4mm) diameter 1.04" (26.3 mm) diameter
Display Resolution 390 x 390 pixels 208 x 208 pixels
Display Type AMOLED
Optional always-on mode
sunlight-visible, transflective memory-in-pixel (MIP)

46.3 g

Small: 32 g
Large: 36 g

Water rating 5 ATM 5 ATM
Battery life

Smartwatch mode: Up to 5 days
GPS mode with music: Up to 6 hours
GPS mode without music: Up to 20 hours

Smartwatch Mode: Up to 7 days
GPS mode: Up to 13 hours
Charging method Garmin proprietary plug charger Garmin proprietary plug charger
Memory/History 200 hours of activity data 80 hours of activity data

Clock Features

GPS Time Sync
Automatic daylight saving time
Alarm clock
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)
Respiration rate (24x7)
Pulse Ox blood oxygen saturation yes (spot-check, and optionally all-day and in sleep)
Fitness age yes (in app) yes (in app)
Body Battery™ energy monitor
All-day stress
Relaxation reminders
Relaxation breathing timer
Sleep yes (advanced) yes (advanced)
Women's health


Garmin Elevate™ wrist heart rate monitor
Barometric altimeter
Thermometer yes (tempe™ sensor required)
Ambient light sensor
Pulse Ox Blood Oxygen Saturation Monitor

Daily Smart Features

Connectivity Bluetooth®, ANT+®, Wi-Fi®
Connect IQ™ (downloadable watch faces, data fields, widgets and apps) yes (watch faces only)
Smart Notifications
Text response/reject phone call with text (Android™ only)
Controls smartphone music
Plays and controls watch music
Music storage up to 500 songs
Find My Phone
Find My Watch
Smartphone compatibility iPhone®, Android™ iPhone®, Android™
Pairs with Garmin Connect™ Mobile
Garmin Pay™

Safety and Tracking Features

Live Event Sharing Android™ Only
Incident Detection during select activities yes (smartphone required)
Assistance yes (smartphone required)

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 traveled
Intensity minutes
Move IQ™
Garmin Connect™ Challenges app yes (optional Connect IQ app)

Gym & Fitness Equipment

Automatic rep counting
Cardio workouts
Available gym activity profiles Strength, Cardio and Elliptical Training, Stair Stepping, Floor Climbing, Indoor Rowing, Breathwork, Pilates, Yoga Cardio and Elliptical Training, Stair Stepping. Yoga may be added through app
Strength workouts
Yoga workouts
Pilates workouts
On-screen workout animations

Training, Planning and Analysis Features

HR zones
HR alerts
HR calories
% HR max
HR broadcast (broadcasts HR data over ANT+™ to paired devices)
Respiration rate (during exercise) Yoga and Breathwork only
GPS speed and distance
Customizable data pages
Customizable activity profiles
Auto Pause®
Interval training
Advanced workouts
Downloadable training plans
Auto Lap®
Manual lap
VO2 Max (Run)
Audio prompts
Touch and/or button lock
Auto scroll
Activity history on watch
Physio TrueUp

Running Features

Available run profiles

Running, Treadmill Running, Indoor Track Running

Running, Treadmill Running. Indoor Track Running may be added through app

GPS-based distance, time and pace
Cadence (provides real-time number of steps per minute)
Run workouts
Foot pod capable

Golfing Features

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
Digital scorecard
Stat tracking (strokes, putts per round, greens and fairways hit)
Garmin AutoShot™
Green View with manual pin position
Hazards and course targets
Round timer/odometer
Automatic club tracking compatible (requires accessory)

Outdoor Recreation

Available outdoor recreation profiles

Skiing, Snowboarding, XC Classic Skiing, Stand Up Paddleboarding, Rowing

Back to start
Total ascent/descent
Area calculation yes (via Connect IQ™)
Hunt/fish calendar yes (via Connect IQ™)
Sun and moon information yes (via Connect IQ™)

Cycling Features

Available cycling profiles

Biking, Indoor Biking

Biking. Indoor Biking may be added through app

Alerts (triggers alarm when you reach goals including time, distance, heart rate or calories)
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

Pool swim metrics (lengths, distance, pace, stroke count, swim efficiency (SWOLF), calories)
Stroke type detection (freestyle, backstroke, breaststroke, butterfly) (pool swim only)
Basic rest timer (up from 0) (pool swim only)
Time and distance alerts
Underwater wrist-based heart rate

Kid Activity Tracking Features

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