Pebble Time vs. Polar M400 vs. Huawei Talkband B2 vs. Pebble Core vs. Amazfit T-Rex

 
Time
M400
Talkband B2
Core
T-Rex
 PebbleTimeRemove Buy NowPolarM400Remove Buy NowHuaweiTalkband B2Remove Buy NowPebbleCoreRemove Buy NowAmazfitT-RexRemove Buy Now

Basic Info

Suggested Price$150$200$180$99$140
Release20152014201520162019

Activity & Fitness

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

Battery

Duration7 days8 hours to 30 days3 daysNA20 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution168 x 144n/a128 x 88NA360 x 360
Size1.26 inchesn/a0.73 inchesNA1.3 inches
TouchNA
Typee-papern/aPMOLEDNAAMOLED

Functions

Audio SpeakerAlerts onlyBluetooth
Clock
PhoneNA
VibrationNA
Voice

Hardware

AccelerometerNA
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATM3 ATMIP57NA5 ATM

Notifications

PhoneNA
EmailsNA
TextsNA

Software

Operating SystemPebble OSn/an/aNABuild-in
Apps
Music

All Wearables