Garmin Forerunner 225 vs. Fitbit Alta vs. Fitbit Flex 2 vs. Garmin 645 Music vs. Garmin Vivosmart HR Plus

 
Forerunner 225
Alta
Flex 2
645 Music
Vivosmart HR Plus
 GarminForerunner 225Remove Buy NowFitbitAltaRemove Buy NowFitbitFlex 2Remove Buy NowGarmin645 MusicRemove Buy NowGarminVivosmart HR PlusRemove Buy Now

Basic Info

Suggested Price$300$130$100$450$179
Release20152016201620182017

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration10 hours to 4 weeks5 days5 days7 days5 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/an/a
Macn/a
Windowsn/a

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolution180 x 180n/an/a240 x 240160 x 68
Size1 inchn/an/a1.2 inches0.5 inches x 0.8 inches
Touchn/an/a
Typen/aOLEDLEDMIPLCD

Functions

Audio Speaker22
Clock
Phonen/a
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATMn/a5 ATM5 ATM5 ATM

Notifications

Phonen/a
Emailsn/an/a
Textsn/a

Software

Operating Systemn/an/an/aNA
Appsn/a
Musicn/a

All Wearables