Garmin Forerunner 645 Music

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Review Score
86%
🏅 Highly Rated
See 5 reviews
Price band






Find today's best price for Garmin Forerunner 645 Music















Garmin Forerunner 645 Music: The Highlights

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 955.

According to our analysis of reviews from experts around the world, it averages a review score of 86%. This puts it in the lowest rated 30% of comparable running watches. According to our analysis of prices across the internet, at current rates it's just above the median price of running watches.

Product comparison

bestDealShow prices
priceBand
Price band
released
Released
Jan 2018
Jun 2022Dec 2014Jan 2022
expertReviewScore
Expert Review Score












Battery life
Battery life
168 hours
336 hours
480 hours
1220 hours
384 hours
Battery life – GPS mode
Battery life – GPS mode
14 hours
162 hours
49 hours
105 hours
24 hours
42 hours
Screen size
Screen size
30 mm
30 mm
33 mm
20 mm
36 mm
33 mm
Weight
Weight
42 g
58 g
53 g
43 g
85 g
76 g
Height
Height
43 mm
42 mm
47 mm
40 mm
51 mm
47 mm
Resolution
Resolution
240 x 240 px
240 x 240 px
260 x 260 px
156 x 156 px
205 x 148 px
416 x 416 px
Waterproof depth
Waterproof depth
50 m
100 m
50 m
100 m
50 m
100 m
Pixel density
Pixel density
283 ppi
282 ppi
282 ppi
276 ppi
452 ppi
Charging time
Charging time
2 hours
Internal storage
Internal storage
4 GB
32 GB
32 GB
0 GB
8 GB
16 GB
Activity Tracking Features
Activity Tracking Features
Activity detectionActivity taggingCoachingDistance trackingElevation trackingGoal settingLive trackingPace measurementRoute uploadsSteps trackingTrackback mode
Activity detectionActivity taggingCoachingDistance trackingElevation trackingGoal settingLive trackingPace measurementRoute uploadsSteps trackingSwim stroke counterSwim stroke recognitionActivity detectionActivity taggingCoachingDistance trackingElevation trackingGoal settingLive trackingPace measurementRoute uploadsSteps trackingSwim stroke counterSwim stroke recognitionActivity detectionActivity taggingCoachingDistance trackingElevation trackingGoal settingLive trackingPace measurementRoute uploadsSteps trackingSwim stroke counterSwim stroke recognitionTrackback modeDistance trackingGoal settingSteps trackingSwim stroke counterSwim stroke recognitionActivity detectionActivity taggingCoachingDistance trackingElevation trackingGoal settingLive trackingPace measurementRoute uploadsSteps trackingSwim stroke counterSwim stroke recognition
Health tracking features
Health tracking features
BMI trackingCalorie burn trackingPeriod notificationsSleep trackingTemperature tracking
BMI trackingCalorie burn trackingCalorie intake trackingPeriod notificationsSleep trackingTemperature trackingWater intake trackingWeight trackingBMI trackingCalorie burn trackingCalorie intake trackingPeriod notificationsSleep trackingTemperature trackingWater intake trackingWeight trackingBMI trackingCalorie burn trackingCalorie intake trackingPeriod notificationsSleep trackingTemperature trackingWater intake trackingWeight trackingCalorie burn trackingSleep trackingBMI trackingCalorie burn trackingCalorie intake trackingPeriod notificationsSleep trackingTemperature trackingWater intake trackingWeight tracking
Connectivity Types
Connectivity Types
ANT+Automatic syncingCloud syncingNFCWi-FiWireless syncing
ANT+Automatic syncingCloud syncingNFCWi-FiWireless syncingANT+Automatic syncingCloud syncingNFCWi-FiWireless syncingANT+Automatic syncingCloud syncingNFCWireless syncingANT+Wireless syncingANT+Automatic syncingCloud syncingMac OS X compatibleNFCWi-FiWireless syncing
Sensors
Sensors
AccelerometerBarometerCadence sensorCompassGalileoGPSGyroscopeHeart rate monitor
AccelerometerBarometerBlood oxygenation monitorBody temperature sensorCompassGPSGyroscopeHeart rate monitorAccelerometerBarometerBlood oxygenation monitorBody temperature sensorCompassGalileoGPSGyroscopeHeart rate monitorAccelerometerBarometerBlood oxygenation monitorBody temperature sensorCompassGalileoGPSGyroscopeHeart rate monitorMonitors perspiration3D compassAccelerometerBarometerCompassGPSAccelerometerBarometerBlood oxygenation monitorBody temperature sensorCompassGalileoGPSGyroscopeHeart rate monitorMonitors perspiration
Alerts
Alerts
Inactivity alertsSilent alarmVibrating alerts
Inactivity alertsIrregular heart rate warningsSilent alarmSmart alarmVibrating alertsInactivity alertsIrregular heart rate warningsSilent alarmVibrating alertsInactivity alertsIrregular heart rate warningsSilent alarmVibrating alertsInactivity alertsInactivity alertsIrregular heart rate warningsSilent alarmVibrating alerts
Supported peripherals
Supported peripherals
Compatible heart monitorCompatible smart scales
Compatible heart monitorCompatible smart scalesCompatible heart monitorCompatible smart scalesCompatible heart monitorCompatible smart scales
Compatible heart monitorCompatible smart scales
Screen features
Screen features
Always-on displayDamage resistant glass
Always-on displaySapphire glassTouch screenAlways-on displayDamage resistant glassTouch screenAlways-on displayTouch screenAlways-on displayDamage resistant glassOLED/AMOLED displayTouch screen
Battery features
Battery features
Battery level indicatorRechargeable battery
Battery level indicatorRechargeable batterySolar powerWireless chargingBattery level indicatorRechargeable batterySolar powerBattery level indicatorRechargeable batterySolar powerWireless chargingBattery level indicatorRechargeable batteryBattery level indicatorRechargeable batteryWireless charging
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Evolution of the ​Garmin Forerunner product family

Garmin Forerunner 645 Music: what the experts say (3 reviews)

Garmin Forerunner 645 Music: 2 Expert video reviews

Garmin Forerunner 645 Music: 1 Manufacturer video

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 cm³
Strap width
20 mm
Width
43 mm
Height
43 mm
Thickness
14 mm
Weight
42 g
Temperature
Min. temperature
-20 °C
Max. temperature
60 °C
Waterproofing
Waterproof depth
50 m
Screen
Pixel density
283 ppi
Resolution
240 x 240 px
Screen size
30 mm

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