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Garmin Forerunner 245 Music vs 645 Music vs 945 Compared

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Featured in this comparison chart are three of Garmin finest GPS smartwatches with outstanding designs and impressive long battery life. Compare the Garmin Forerunner 245 Music vs 645 Music vs 945 specs and features to find out the differences. While each of these three is fitness-focused and well equipped to track your active life, the Forerunner 945 is a more advanced and more equipped GPS smartwatch. Compare to find out the differences.

Garmin Forerunner 245 Music vs 645 Music vs 945: Specifications Compared

 
 
Product Info
Garmin Forerunner 245 Music Specs

Garmin Forerunner 245 Music Specifications, Features and Price

Garmin Forerunner 645 Music Specs

Garmin Forerunner 645 Music Specifications, Features and Price

Garmin Forerunner 945 Specs and features

Garmin Forerunner 945 Specifications, Features and Price

Price $349.99 $329.00 $449.99 $291.23 $589.00
ABOUT DEVICE ABOUT DEVICE ABOUT DEVICE ABOUT DEVICE
Device name Garmin Forerunner 245 Music Garmin Forerunner 645 Music Garmin Forerunner 945
Device type Fitness/Sport smartwatch Fitness/Sport smartwatch Fitness/Sport smartwatch
Gender Unisex Unisex Men
Release date April, 2019 November, 2017 April, 2019
Predecessor Garmin Forerunner 235 Garmin Forerunner 935
Successor
Versions Garmin Forerunner 245, Garmin Forerunner 245 Music Garmin Forerunner 645, Garmin Forerunner 645 Music
BODY BODY BODY BODY
Dimension 42.3 x 42.3 x 12.2 mm 42.5 x 42.5 x 13.5 mm 47 x 47 x 13.7 mm
Weight 38.5 grams 42.2 grams 50 grams
Shape Circular Circular Circular
Case material Fiber-reinforced polymer Fiber-reinforced polymer Fiber-reinforced polymer
Strap material Silicone Silicone Silicone
Bezel material Fiber-reinforced polymer Stainless steel Fiber-reinforced polymer
Strap size 20 mm 20 mm 22 mm
Screen protection Corning Gorilla Glass 3 Corning Gorilla Glass 3 Corning Gorilla Glass DX
Water resistance Yes, 5ATM Yes, 5ATM Yes, 5ATM
Durability test
Swim-proof Yes, recommended Yes, recommended Yes, recommended
Color Aqua, Black, White Black, Rose-gold Black
DISPLAY DISPLAY DISPLAY DISPLAY
Display size 1.2 inches 1.2 inches 1.2 inches
Display type LCD, Memory-in-pixel (MIP), transflective LCD, Memory-in-pixel (MIP), transflective LCD, Memory-in-pixel (MIP), transflective
Display resolution 240 x 240 px 240 x 240 px 240 x 240 px
Pixel density
Always on Yes Yes Yes
Custom watch face Yes Yes Yes
Input type (not touchscreen), 5 Physical buttons (not touchscreen), 5 Physical buttons (not touchscreen), 5 Physical buttons
CONNECTIVITY CONNECTIVITY CONNECTIVITY CONNECTIVITY
Bluetooth ANT+, Bluetooth ANT+, Bluetooth ANT+, Bluetooth
Bluetooth calling No No No
GPS Galileo, GLONASS, GPS Galileo, GLONASS, GPS Galileo, GLONASS, GPS
NFC No Yes Yes
Wi-Fi Yes, Wi-Fi 802.11 b/g/n Yes, Wi-Fi 802.11 b/g/n Yes, Wi-Fi 802.11 b/g/n
MEMORY MEMORY MEMORY MEMORY
RAM
ROM 4GB 4GB 8GB
Memory card slot No No No
CELLULAR CONNECTIVITY CELLULAR CONNECTIVITY CELLULAR CONNECTIVITY CELLULAR CONNECTIVITY
Technology None None None
SIM type None None None
Band
NOTIFICATIONS NOTIFICATIONS NOTIFICATIONS NOTIFICATIONS
SMS alert Yes Yes Yes
Calls alert Yes Yes Yes
Email alert Yes Yes Yes
Event reminder Yes Yes Yes
Third-party apps alert Yes Yes Yes
MEDIA MEDIA MEDIA MEDIA
Audio mp3/mp4 mp3/mp4 mp3/mp4
Bluetooth music Yes Yes Yes
Loudspeaker No No No
Microphone No No No
Camera No No No
Radio No No No
SENSORS SENSORS SENSORS SENSORS
Accelerometer Yes Yes Yes
Altimeter No Yes Yes
Ambient light Yes Yes Yes
Barometer No Yes Yes
Compass Yes Yes Yes
ECG No No No
Gyroscope Yes Yes
HRM Yes Yes Yes
Pulse oximeter Yes No Yes
Thermometer No Yes Yes
Other sensors
ACTIVITY TRACKING ACTIVITY TRACKING ACTIVITY TRACKING ACTIVITY TRACKING
Blood oxygen Yes No Yes
Blood Pressure No No No
Calories Yes Yes Yes
Distance Yes Yes Yes
ECG tracking No No No
Fitness Level Yes Yes Yes
Heart rate monitoring Yes Yes Yes
Sleep tracking Yes Yes Yes
Steps Yes Yes Yes
Stress Yes Yes Yes
Incidental fall detection Yes Yes Yes
Menstrual cycle Yes No Yes
VO2 Max Yes Yes Yes
Swim-tracking Yes Yes Yes
Swim-heart tracking Yes No Yes
On-screen workout No No No
Sport modes Yes Yes Yes
BATTERY BATTERY BATTERY BATTERY
Battery type non-removable Lithium-polymer non-removable Lithium-polymer non-removable Lithium-polymer
Battery capacity
Battery life GPS mode: 24hrs, Smartwatch mode: 7 days GPS with music: 5hrs, Smartwatch mode: 7 days GPS with music: up to 10hrs, Smartwatch mode: Up to 2 weeks, Ultratrac: up to 60hrs
Charging type Charging dock Charging dock Charging dock
Charging time 1-2 hours 1-2 hours 1-2 hours
Solar power No No No
PLATFORM PLATFORM PLATFORM PLATFORM
Chipset
CPU
GPU
Operating system Proprietary OS Proprietary OS Proprietary OS
MISC MISC MISC MISC
Companion app Garmin Connect Garmin Connect Garmin Connect
Compatibility Android, iOS Android, iOS Android, iOS
Payment system None Garmin Pay Garmin Pay
Interchangeable strap 20mm, Yes 20mm, Yes 22 mm, Yes
Voice command No No No
Find my phone Yes Yes Yes
Box content Charger, Garmin Forerunner 245 Music, Manual, Straps Charger, Garmin Forerunner 645 Music, Manual, Straps Charger, Garmin Forerunner 945, Manual, Straps
Price $349.99 $329.00 $449.99 $291.23 $589.00

Garmin Forerunner 245 Music vs 645 Music vs 945: Fitness Tracking Features

Forerunner 245 MusicForerunner 645Forerunner 945
Activity Tracking Features

Steps counter, floors climbed, fitness age, Move IQ
intensity minutes and distanced traveled.
YesYesYes
Body Battery Energy Monitor

Lets you see your body’s energy levels throughout the day so you can find the best times for activity and rest.
YesYesYes
Pulse OX Sensor

The Pulse Ox sensor gauges your blood oxygen saturation during the day and as you sleep to show how well your body is absorbing oxygen.
YesNoYes
Stress Tracking

Helps you find out if you’re having a calm, balanced or stressful day. Relax reminders will even prompt you to do a short breathing activity when you’re feeling stressed.
YesYesYes
Menstrual Cycle Tracking

Lets you use the Garmin Connect™ app to track your cycle, log physical and emotional symptoms and learn about training and nutrition during each phase of your cycle. Even get cycle tracking information on your wrist.
YesNoYes
Hydration Tracking

Log your daily fluid intake as a reminder to stay hydrated. You can even have an auto goal for hydration that adjusts based on how much sweat you lose during activities — even underwater.
NoNoYes
Respiration Tracking

See how you’re breathing throughout the day, during sleep and during breath-work and yoga activities.
NoNoYes
Advanced Sleep Monitoring

Get a full picture of how you’re sleeping, with a breakdown of your light, deep and REM sleep stages as well as Pulse Ox and respiration data
YesYesYes
Heart Rate Tracking

The watch constantly samples your heart rate2 and will alert you if it stays high while you’re at rest. It also helps gauge how hard you work during activities even underwater.
YesYesYes
Mindful Breathing

When you want to relax or focus, you can start a breath-work activity, and this watch will track your stress and respiration to help you get a better understanding of how you’re breathing.
NoNoNo
On-Screen Animated Workout Modes

Easy-to-follow, animated cardio, strength, yoga and Pilates workouts come preloaded on the watch, and you can download more from the Garmin Connect app.
NoNoNo
Preloaded Workout Modes

Track all the ways you move with more than 20 preloaded GPS and indoor sports apps — including walking, running, cycling, pool swimming, golf and more.
YesYesYes
Garmin Coach

Get a personal running coach on your wrist, for free, to help you train for your next 5K, 10K or half-marathon.
YesYesYes
Safety and Tracking Features

When your watch and phone are paired, your live location can be sent to your contacts manually or — during outdoor activities — automatically with built-in incident detection.

Also Livetrack, Group LiveTrack, Assistance and Live event sharing allow you to invite other to join you in your training.
Yes, lacks Group LiveTrackYes, lacks Group LiveTrack,
Assistance and
Live event sharing
Yes
Gym & Fitness Equipment

Available gym profiles; Strength, Cardio and Elliptical Training, Stair Stepping, Floor Climbing, Indoor Rowing, Pilates and Yoga.
FewerFewerMore
Training, Planning and Analysis Features

Available run profiles; Running, Treadmill Running, Indoor Track Running, Trail Running.

GPS speed and distance, customizable activity profiles, advanced training, VO2 Max., heat and altitude acclimation, training load, training effect, auto and manual mutisport activities, Garmin and Strava live segments.
FewerFewerMore
ClimbPro Feature

Use ClimbPro ascent planner on downloaded courses to see real-time information on your current and upcoming climbs, including gradient, distance and elevation gain.
NoNoYes
Outdoor Recreation Features

Outdoor recreational features include hiking, climbing, mountain biking, skiing, snowboarding, XC skiing, stand up paddleboarding, rowing, kayaking, jumpmaster, tactical
FewerFewerMore
Multi-GNSS Support

Access multiple global navigation satellite systems (GPS, GLONASS and Galileo) to track in more challenging environments than GPS alone.
YesYesYes
TOPO Maps

Preloaded Topographical (TOPO) maps allow you use TOPO maps with Trendline Popularity Routing to find the best routes and navigate your adventures effortlessly
NoNoYes
Ski Maps

Preloaded Ski maps allow you view run names and difficulty ratings for 2,000 worldwide ski resorts.
NoNoNo
Round-trip Routing
Enter a distance you want to travel, and get suggested routes that will bring you back to your starting point. Trendline™ popularity routing helps you find the best local paths.
NoNoYes
Turn-by-turn Navigation

Follow a route or course with help from turn-by-turn directions, which let you know ahead of time when the next turn is coming.
YesYesYes
ABC sensors

Navigate your next trail with ABC sensors, including an altimeter for elevation data, barometer to monitor weather and three-axis electronic compass
NoYesYes
Running Features

Available run profiles include running, treadmill running, indoor track running, trail running
FewerFewerMore
PACEPRO Technology

A first-of-its-kind PacePro feature helps keep you on pace with grade-adjusted guidance as you run a course.
YesYesYes
Golf Courses

Access full-color CourseView maps for more than 41,000 golf courses around the world, and get button targeting and the PlaysLike Distance feature.
NoNoYes
Swimming Features

Available swimming profiles; pool swimming, open water swimming, swimming/running.

Other features include; tracks metrics such as distance, pace, stroke count, stroke distance and SWOLF.
FewerFewerYes
Underwater Wrist-based Heart Rate Tracking

Features underwater wrist-based heart rate tracking that helps you manage your swimming intensity.
YesNoYes
Altimeter

Floors climbed
NoYesYes

Garmin Forerunner 245 Music vs 645 Music vs 945: Battery Life

Forerunner 245 Music Forerunner 645 Music Forerunner 945
Smartwatch Mode: Up to 7 days
GPS mode with music: Up to 6 hours
GPS mode without music: Up to 24 hours
Smartwatch Mode: Up to 7 days
GPS mode with music: Up to 5 hours
GPS mode without music: Up to 14 hours
Smartwatch Mode: Up to 2 weeks
GPS mode with music: Up to 10 hours
GPS mode without music: Up to 36 hours

Garmin Forerunner 245 Music vs 645 Music vs 945: Editor’s Pick

garmin forerunner 945 specifications, features and price

The Garmin Forerunner 945 has the most sophisticated design with more durable materials, while also being the most equipped to track your active life and has the most features.

Garmin Forerunner 245 Music vs 645 Music vs 945: Prices Compared