Pebble Time vs. Fitbit Alta HR vs. Amazfit T-Rex vs. Garmin VivoActive 4 vs. Apple Series 6

 
Time
Alta HR
T-Rex
VivoActive 4
Series 6
 PebbleTimeRemove Buy NowFitbitAlta HRRemove Buy NowAmazfitT-RexRemove Buy NowGarminVivoActive 4Remove Buy NowAppleSeries 6Remove Buy Now

Basic Info

Suggested Price$150$150$140$349$399
Release20152017201920192020

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration7 days7 days20 days8 daysNot yet
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution168 x 144128 x 36360 x 360260 x 260384 x 480
Size1.26 inches1.4 inches1.3 inches1.3ionches40mm
Touch
Typee-paperOLEDAMOLEDMIPMicroLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor5 ATM
Water Resistance5 ATM5 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemPebble OSBuild-inWear OSWatchOS 5
Apps
Music

All Wearables