Garmin Vivosmart HR vs. Garmin 645 Music vs. Fitbit Flex vs. Garmin Forerunner 45 vs. Apple SE

 
Vivosmart HR
645 Music
Flex
Forerunner 45
SE
 GarminVivosmart HRRemove Buy NowGarmin645 MusicRemove Buy NowFitbitFlexRemove Buy NowGarminForerunner 45Remove Buy NowAppleSERemove Buy Now

Basic Info

Suggested Price$170$450$100$199$279
Release20152018201320192020

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5 days7 days5 days7 days18 hours
Rechargeable

Compatibility

Android
iOS
Windows Phonen/aNA
Macn/a
Windowsn/a

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution160 x 68240 x 240NA208 x 208384 x 480
Size1.08 inches1.2 inchesNA1.04 inches40mm
TouchNA
Typen/aMIPLEDLCDMicroLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet SensorNot yet
Water Resistance5 ATM5 ATM1 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aNABuilt-inWatchOS 5
Apps
Music

All Wearables