Fitbit Alta vs. Fitbit Flex 2 vs. Garmin 645 Music vs. Garmin Forerunner 235 vs. Diesel On Full Guard 2.5

 
Alta
Flex 2
645 Music
Forerunner 235
On Full Guard 2.5
 FitbitAltaRemove Buy NowFitbitFlex 2Remove Buy NowGarmin645 MusicRemove Buy NowGarminForerunner 235Remove Buy NowDieselOn Full Guard 2.5Remove Buy Now

Basic Info

Suggested Price$130$100$450$299.99$325
Release20162016201820172018

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5 days5 days7 days9 days4 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/a
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolutionn/an/a240 x 240215 x 180454x454
Sizen/an/a1.2 inches1.23 inches1.39 inches
Touchn/an/a
TypeOLEDLEDMIPMIP

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistancen/a5 ATM5 ATM5 ATM3 ATM

Notifications

Phone
Emailsn/a
Texts

Software

Operating Systemn/an/aWear OS
Apps
Music

Wearables by Diesel

Diesel On Full Guard

All Wearables