Pebble Time Steel vs. Polar M400 vs. Motorola Moto 360 (1st Gen) vs. Jawbone UP4 vs. Amazfit T-Rex

 
Time Steel
M400
Moto 360 (1st Gen)
UP4
T-Rex
 PebbleTime SteelRemove Buy NowPolarM400Remove Buy NowMotorolaMoto 360 (1st Gen)Remove Buy NowJawboneUP4Remove Buy NowAmazfitT-RexRemove Buy Now

Basic Info

Suggested Price$250$200$150$200$140
Release20152014201420152019

Activity & Fitness

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

Battery

Duration10 days8 hours to 30 days1 dayNA20 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution168 x 144n/a320 x 260NA360 x 360
Size1.26 inchesn/a1.56 inchesNA1.3 inches
TouchNA
Typee-papern/aLCDNAAMOLED

Functions

Audio SpeakerAlerts only
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATM3 ATMIP67NA5 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemPebble OSn/aAndroid WearNABuild-in
Apps
MusicNANA

All Wearables