Fitbit Flex 2 vs. Garmin 645 Music vs. Garmin Forerunner 235 vs. Garmin Vivofit 4 vs. Apple SE

 
Flex 2
645 Music
Forerunner 235
Vivofit 4
SE
 FitbitFlex 2Remove Buy NowGarmin645 MusicRemove Buy NowGarminForerunner 235Remove Buy NowGarminVivofit 4Remove Buy NowAppleSERemove Buy Now

Basic Info

Suggested Price$100$450$299.99$79.95$279
Release20162018201720182020

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5 days7 days9 days1 year18 hours
Rechargeable

Compatibility

Android
iOS
Windows Phonen/a
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolutionn/a240 x 240215 x 18088 x 88384 x 480
Sizen/a1.2 inches1.23 inchesNA40mm
Touchn/a
TypeLEDMIPMIPNAMicroLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

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

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aWatchOS 5
Apps
Music

All Wearables