Fitbit Charge 2 vs. Garmin 645 Music vs. Xiaomi Mi Band 4 vs. Amazfit GTR

 
Charge 2
645 Music
Mi Band 4
GTR
 FitbitCharge 2Remove Buy NowGarmin645 MusicRemove Buy NowXiaomiMi Band 4Remove Buy NowAmazfitGTRRemove Buy Now

Basic Info

Suggested Price$150$450$25$199
Release2016201820192019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5 days7 days20 days24 days
Rechargeable

Compatibility

Android
iOS
Windows Phone
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/a240 x 240120x240454 x 454
Sizen/a1.2 inches0.95 inches1.39 inches
Touchn/a
TypeOLEDMIPAMOLEDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

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

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aAMAZFIT OSBuild-in
Apps
Music

All Wearables