Fitbit Flex 2 vs. Amazfit Stratos vs. Garmin 645 Music vs. Garmin Forerunner 235 vs. Apple SE

 
Flex 2
Stratos
645 Music
Forerunner 235
SE
 FitbitFlex 2Remove Buy NowAmazfitStratosRemove Buy NowGarmin645 MusicRemove Buy NowGarminForerunner 235Remove Buy NowAppleSERemove Buy Now

Basic Info

Suggested Price$100$199$450$299.99$279
Release20162018201820172020

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5 days5 days7 days9 days18 hours
Rechargeable

Compatibility

Android
iOS
Windows Phonen/a
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolutionn/a320 x 300240 x 240215 x 180384 x 480
Sizen/a1.34 inches1.2 inches1.23 inches40mm
Touchn/a
TypeLEDOLEDMIPMIPMicroLED

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/aProprietaryWatchOS 5
Apps
Music

All Wearables