Garmin 645 Music vs. Garmin Chronos vs. Fitbit Flex vs. Xiaomi Mi Band vs. Garmin Vivosmart 4

 
645 Music
Chronos
Flex
Mi Band
Vivosmart 4
 Garmin645 MusicRemove Buy NowGarminChronosRemove Buy NowFitbitFlexRemove Buy NowXiaomiMi BandRemove Buy NowGarminVivosmart 4Remove Buy Now

Basic Info

Suggested Price$450$1500$100$15$130
Release20182018201320152018

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration7 days8 days5 days30 days7 days
Rechargeable

Compatibility

Android
iOS
Windows PhoneNA
MacNA
WindowsNA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

ColorNA
Resolution240 x 240218 x 218NANA48 x 128
Size1.2 inches1.2 inchesNANA0.74 inches
TouchNANA
TypeMIPMIPLEDNAOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATM10 ATM1 ATMIP675 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemWear OSNANA
Apps
Music

All Wearables