Fitbit Surge vs. Motorola Moto 360 (2nd Gen) vs. Polar M400 vs. Garmin Chronos vs. Amazfit T-Rex

 
Surge
Moto 360 (2nd Gen)
M400
Chronos
T-Rex
 FitbitSurgeRemove Buy NowMotorolaMoto 360 (2nd Gen)Remove Buy NowPolarM400Remove Buy NowGarminChronosRemove Buy NowAmazfitT-RexRemove Buy Now

Basic Info

Suggested Price$250$300$200$1500$140
Release20162015201420182019

Activity & Fitness

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

Battery

Duration7 days1.5 days8 hours to 30 days8 days20 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/a360 x 325 or 360 x 330n/a218 x 218360 x 360
Size1.26 inches1.37 inches or 1.56 inchesn/a1.2 inches1.3 inches
Touch
TypeMonochrome LCDLCDn/aMIPAMOLED

Functions

Audio SpeakerBluetoothAlerts only
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATMIP673 ATM10 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aAndroid Wearn/aWear OSBuild-in
Apps
Musicn/a

All Wearables