Garmin Fenix 3 vs. Polar Loop 2 vs. Xiaomi Mi Band 3 vs. Xiaomi Mi Band 4

 
Fenix 3
Loop 2
Mi Band 3
Mi Band 4
 GarminFenix 3Remove Buy NowPolarLoop 2Remove Buy NowXiaomiMi Band 3Remove Buy NowXiaomiMi Band 4Remove Buy Now

Basic Info

Suggested Price$500$120$44.95$25
Release2015201520182019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heartn/an/a
Oxygen
Sleep
Steps
Swim

Battery

Duration50 hours to 6 weeks8 days (without notifications)20 days20 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution218 x 218n/a128 x 80120x240
Size1.2 inchesn/a0.78 inches0.95 inches
Touch
TypeChroma LEDLEDOLEDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance10 ATM2 ATM5 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/an/aAMAZFIT OS
Apps
Music

All Wearables