Fitbit Alta vs. Fitbit Flex 2 vs. Garmin 645 Music vs. Garmin Chronos vs. Garmin Vivosmart 4

 
Alta
Flex 2
645 Music
Chronos
Vivosmart 4
 FitbitAltaRemove Buy NowFitbitFlex 2Remove Buy NowGarmin645 MusicRemove Buy NowGarminChronosRemove Buy NowGarminVivosmart 4Remove Buy Now

Basic Info

Suggested Price$130$100$450$1500$130
Release20162016201820182018

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5 days5 days7 days8 days7 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/a
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolutionn/an/a240 x 240218 x 21848 x 128
Sizen/an/a1.2 inches1.2 inches0.74 inches
Touchn/an/a
TypeOLEDLEDMIPMIPOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistancen/a5 ATM5 ATM10 ATM5 ATM

Notifications

Phone
Emailsn/a
Texts

Software

Operating Systemn/an/aWear OS
Apps
Music

All Wearables