Fitbit Flex 2 vs. Apple Watch vs. Garmin 645 Music vs. Garmin Forerunner 235 vs. Fitbit Charge 3

 
Flex 2
Watch
645 Music
Forerunner 235
Charge 3
 FitbitFlex 2Remove Buy NowAppleWatchRemove Buy NowGarmin645 MusicRemove Buy NowGarminForerunner 235Remove Buy NowFitbitCharge 3Remove Buy Now

Basic Info

Suggested Price$100$349$450$299.99$150
Release20162015201820172018

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5 days18 hours7 days9 days7 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/aNA
MacNA
WindowsNANot yet

Connectivity

Bluetooth
Cellular
GPS
NFCNA
Wi-Fi

Display

Colorn/a
Resolutionn/a340 x 272 or 390 x 312240 x 240215 x 18066 x 18
Sizen/a1.5 inches or 1.65 inches1.2 inches1.23 inches.721 inches
Touchn/a
TypeLEDAMOLEDMIPMIPOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATMIPX75 ATM5 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aWatch OSNA
Apps
Music

All Wearables