Pebble Steel vs. Polar M400 vs. Pebble Core vs. Mobvoi TicWatch S2 vs. Amazfit T-Rex

 
Steel
M400
Core
TicWatch S2
T-Rex
 PebbleSteelRemove Buy NowPolarM400Remove Buy NowPebbleCoreRemove Buy NowMobvoiTicWatch S2Remove Buy NowAmazfitT-RexRemove Buy Now

Basic Info

Suggested Price$150$200$99$180$140
Release20142014201620192019

Activity & Fitness

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

Battery

Duration5-7 days8 hours to 30 daysNA2 DAYS20 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution168 x 144n/aNA400 x 400360 x 360
Size1.26 inchesn/aNA1.39 inches1.3 inches
TouchNA
Typee-papern/aNAOLEDAMOLED

Functions

Audio SpeakerAlerts only
Clock
PhoneNA
VibrationNA
Voice

Hardware

AccelerometerNA
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATM3 ATMNA5 ATM5 ATM

Notifications

PhoneNA
EmailsNA
TextsNA

Software

Operating SystemPebble OSn/aNAWear OSBuild-in
Apps
Music

All Wearables