Fitbit One vs. Garmin 645 Music vs. Garmin Chronos vs. Fitbit Flex vs. Garmin Forerunner 45

 
One
645 Music
Chronos
Flex
Forerunner 45
 FitbitOneRemove Buy NowGarmin645 MusicRemove Buy NowGarminChronosRemove Buy NowFitbitFlexRemove Buy NowGarminForerunner 45Remove Buy Now

Basic Info

Suggested Price$100$450$1500$100$199
Release20122018201820132019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration10-14 days7 days8 days5 days7 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/aNA
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/a240 x 240218 x 218NA208 x 208
Sizen/a1.2 inches1.2 inchesNA1.04 inches
TouchNA
TypeOLEDMIPMIPLEDLCD

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceSplast Resistant5 ATM10 ATM1 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aWear OSNABuilt-in
Apps
Music

All Wearables