Fitbit Flex 2 vs. Microsoft Band 2 vs. Polar A370 vs. Michael Kors Access Runway vs. Amazfit T-Rex

 
Flex 2
Band 2
A370
Access Runway
T-Rex
 FitbitFlex 2Remove Buy NowMicrosoftBand 2Remove Buy NowPolarA370Remove Buy NowMichael KorsAccess RunwayRemove Buy NowAmazfitT-RexRemove Buy Now

Basic Info

Suggested Price$100$250$179.95$350$140
Release20162015201720182019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5 days48 hours (without GPS)Up to 3 days1 day20 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolutionn/a320 x 128160 x 80390 x 390360 x 360
Sizen/a1.36 inches1.18 inches1.19 inches1.3 inches
Touchn/a
TypeLEDCapacitative TFTTFT LCDAMOLEDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATMIPX7WR303 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/an/aWear OSBuild-in
Apps
Music

All Wearables