Pebble Time Steel vs. Polar M400 vs. Asus ZenWatch vs. Polar A370 vs. Amazfit T-Rex

 
Time Steel
M400
ZenWatch
A370
T-Rex
 PebbleTime SteelRemove Buy NowPolarM400Remove Buy NowAsusZenWatchRemove Buy NowPolarA370Remove Buy NowAmazfitT-RexRemove Buy Now

Basic Info

Suggested Price$250$200$150$179.95$140
Release20152014201420172019

Activity & Fitness

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

Battery

Duration10 days8 hours to 30 daysNAUp to 3 days20 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution168 x 144n/a320 x 320160 x 80360 x 360
Size1.26 inchesn/a1.63 inches1.18 inches1.3 inches
Touch
Typee-papern/aAMOLEDTFT LCDAMOLED

Functions

Audio SpeakerAlerts only
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATM3 ATMIP55WR305 ATM

Notifications

Phone
EmailsNA
TextsNA

Software

Operating SystemPebble OSn/aAndroid WearBuild-in
Apps
Music

All Wearables