Garmin 645 Music vs. Garmin Chronos vs. Fitbit Flex vs. Garmin Vivosmart 4 vs. Fitbit Inspire 3

 
645 Music
Chronos
Flex
Vivosmart 4
Inspire 3
 Garmin645 MusicRemove Buy NowGarminChronosRemove Buy NowFitbitFlexRemove Buy NowGarminVivosmart 4Remove Buy NowFitbitInspire 3Remove Buy Now

Basic Info

Suggested Price$450$1500$100$130$100
Release20182018201320182022

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration7 days8 days5 days7 days10 days
Rechargeable

Compatibility

Android
iOS
Windows PhoneNA
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution240 x 240218 x 218NA48 x 12832x18
Size1.2 inches1.2 inchesNA0.74 inches46 inches
TouchNA
TypeMIPMIPLEDOLEDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATM10 ATM1 ATM5 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemWear OSNA
Apps
Music

All Wearables