Pebble Time vs. Pebble Time Round vs. Garmin Vivosmart vs. Garmin Vivofit 4 vs. Amazfit T-Rex

 
Time
Time Round
Vivosmart
Vivofit 4
T-Rex
 PebbleTimeRemove Buy NowPebbleTime RoundRemove Buy NowGarminVivosmartRemove Buy NowGarminVivofit 4Remove Buy NowAmazfitT-RexRemove Buy Now

Basic Info

Suggested Price$150$200$170$79.95$140
Release20152015201420182019

Activity & Fitness

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

Battery

Duration7 days2 days7 days1 year20 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution168 x 144n/a128 x 1688 x 88360 x 360
Size1.26 inchesround1.41 inchesNA1.3 inches
Touch
Typee-papere-paperOLEDNAAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATMIPX75 ATM5 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemPebble OSPebble OSn/aBuild-in
Apps
Music

All Wearables