Garmin Forerunner 645 Music

Review Score
81%
πŸ… Highly Rated
See 8 reviews
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Overview

The ​Forerunner is a running watch family by Garmin.

The Forerunner 645 Music was released in 2018. The latest model in the family is the Garmin Forerunner 265S.

According to our analysis of reviews from experts around the world, it averages a review score of 81%. This puts it rated just below the median rating of comparable running watches. According to our analysis of prices across the internet, at current rates it's in the cheapest 20% of running watches.

Garmin Forerunner 645 Music alternatives

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Garmin Forerunner 645 Music
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released
Released
Jan 2018
Oct 2022Nov 2022Oct 2022Oct 2022Oct 2022
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Expert Review Score
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Battery life
Battery life
168 hours
288 hours
672 hours
288 hours
288 hours
288 hours
Battery life – GPS mode
Battery life – GPS mode
14 hours
28 hours
111 hours
28 hours
28 hours
28 hours
Screen size
Screen size
30 mm
30 mm
23 mm
30 mm
30 mm
30 mm
Weight
Weight
42 g
87 g
65 g
144 g
94 g
88 g
Height
Height
43 mm
46 mm
45 mm
46 mm
46 mm
46 mm
Resolution
Resolution
240 x 240 px
240 x 240 px
176 x 176 px
240 x 240 px
240 x 240 px
240 x 240 px
Waterproof depth
Waterproof depth
50 m
100 m
100 m
100 m
100 m
Pixel density
Pixel density
283 ppi
283 ppi
283 ppi
283 ppi
283 ppi
Charging time
Charging time
2 hours
Internal storage
Internal storage
4 GB
0 GB
32 GB
32 GB
Activity Tracking Features
Activity Tracking Features
Activity detectionActivity taggingCoachingDistance trackingElevation trackingGoal settingLive trackingPace measurementRoute uploadsSteps trackingTrackback mode
Activity detectionActivity taggingCoachingDistance trackingElevation trackingLive trackingPace measurementRoute uploadsSteps trackingSwim stroke counterTrackback modeActivity detectionActivity taggingCoachingDistance trackingElevation trackingLive trackingPace measurementRoute uploadsSteps trackingSwim stroke counterTrackback modeActivity detectionActivity taggingCoachingDistance trackingElevation trackingLive trackingPace measurementRoute uploadsSteps trackingSwim stroke counterTrackback modeActivity detectionActivity taggingCoachingDistance trackingElevation trackingLive trackingPace measurementRoute uploadsSteps trackingSwim stroke counterTrackback modeActivity detectionActivity taggingCoachingDistance trackingElevation trackingLive trackingPace measurementRoute uploadsSteps trackingSwim stroke counterTrackback mode
Health tracking features
Health tracking features
BMI trackingCalorie burn trackingPeriod notificationsSleep trackingTemperature tracking
BMI trackingCalorie burn trackingFertility notificationsOvulation predictionPeriod notificationsPeriod start date predictionsSleep trackingTemperature trackingWater intake trackingBMI trackingCalorie burn trackingCalorie intake trackingFertility notificationsOvulation predictionPeriod notificationsPeriod start date predictionsSleep trackingTemperature trackingWater intake trackingWeight trackingBMI trackingCalorie burn trackingFertility notificationsOvulation predictionPeriod notificationsPeriod start date predictionsSleep trackingTemperature trackingWater intake trackingBMI trackingCalorie burn trackingFertility notificationsOvulation predictionPeriod notificationsPeriod start date predictionsSleep trackingTemperature trackingWater intake trackingBMI trackingCalorie burn trackingFertility notificationsOvulation predictionPeriod notificationsPeriod start date predictionsSleep trackingTemperature trackingWater intake tracking
Sensors
Sensors
AccelerometerBarometerCadence sensorCompassGalileoGPSGyroscopeHeart rate monitor
AccelerometerBarometerBlood oxygenation monitorCadence sensorCompassGPSGyroscopeHeart rate monitorAccelerometerBarometerBlood oxygenation monitorBody temperature sensorCompassGalileoGPSHeart rate monitorMonitors perspirationAccelerometerBarometerBlood oxygenation monitorCadence sensorCompassGalileoGPSGyroscopeHeart rate monitorAccelerometerBarometerBlood oxygenation monitorCadence sensorCompassGalileoGPSGyroscopeHeart rate monitorAccelerometerBarometerBlood oxygenation monitorCadence sensorCompassGalileoGPSGyroscopeHeart rate monitor
Alerts
Alerts
Inactivity alertsSilent alarmVibrating alerts
Inactivity alertsSilent alarmVibrating alertsVoice feedbackInactivity alertsIrregular heart rate warningsSilent alarmVibrating alertsVoice feedbackInactivity alertsSilent alarmVibrating alertsVoice feedbackInactivity alertsIrregular heart rate warningsSilent alarmVibrating alertsVoice feedbackInactivity alertsSilent alarmVibrating alertsVoice feedback
Screen features
Screen features
Always-on displayDamage resistant glass
Always-on displaySapphire glassAlways-on displayAlways-on displaySapphire glassAlways-on displaySapphire glassAlways-on displaySapphire glass
Battery features
Battery features
Battery level indicatorRechargeable battery
Rechargeable batteryRechargeable batterySolar powerRechargeable batteryRechargeable batteryRechargeable battery
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Garmin Forerunner 645 Music: what the experts say (3 reviews)

Garmin Forerunner 645 Music: 4 Expert video reviews

Garmin Forerunner 645 Music characteristics and specifications

Specificationsvs Average
Model
645 Music
Released
Jan 2018
Battery
Charging time
2 hours
Battery life – GPS mode
14 hours
Battery life
168 hours
System
Bluetooth version
4
Internal storage
4 GB
Measurements
Volume
24 cmΒ³
Strap width
20 mm
Width
43 mm
Height
43 mm
Thickness
14 mm
Weight
42 g
Temperature
Min. temperature
-20 Β°C
Max. temperature
60 Β°C
Waterproofing
Waterproof depth
50 m
Screen
Pixel density
283 ppi
Resolution
240 x 240 px
Screen size
30 mm

Evolution of the ​Garmin Forerunner product family

new!
Sync your parkrun results to your Strava activities
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Tom Green
July 16, 2024 at 9:55 AM
Gunnersbury parkrun #230 (my #3️⃣4️⃣)
πŸ“Š Stats by geerly.com πŸ‘Ÿ πŸ•’ Official time: 00:22:45 | Course PB 🚨 🏁 Overall position: 35/549 🚹 Gender position: 21/299 🎯 Age grade: 61%