Motorola Moto 360 (2nd Gen) vs. Polar M600 vs. Fitbit Charge 2 vs. Polar A370 vs. Amazfit T-Rex

 
Moto 360 (2nd Gen)
M600
Charge 2
A370
T-Rex
 MotorolaMoto 360 (2nd Gen)Remove Buy NowPolarM600Remove Buy NowFitbitCharge 2Remove Buy NowPolarA370Remove Buy NowAmazfitT-RexRemove Buy Now

Basic Info

Suggested Price$300$330$150$179.95$140
Release20152016201620172019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration1.5 days2 days5 daysUp to 3 days20 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution360 x 325 or 360 x 330240 x 240n/a160 x 80360 x 360
Size1.37 inches or 1.56 inches1.3 inchesn/a1.18 inches1.3 inches
Touchn/an/a
TypeLCDTFTOLEDTFT LCDAMOLED

Functions

Audio SpeakerBluetoothAlerts only
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceIP67IPX8n/aWR305 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemAndroid WearAndroid Wearn/aBuild-in
Apps
Musicn/a

All Wearables