Fitbit Flex vs. Jaybird Reign vs. Pebble Core vs. Amazfit T-Rex vs. Apple Watch Ultra

 
Flex
Reign
Core
T-Rex
Watch Ultra
 FitbitFlexRemove Buy NowJaybirdReignRemove Buy NowPebbleCoreRemove Buy NowAmazfitT-RexRemove Buy NowAppleWatch UltraRemove Buy Now

Basic Info

Suggested Price$100$150$99$140$799
Release20132015201620192022

Activity & Fitness

Calories
Cycling (Bicycling)NA
Distance
Heart
Oxygen
SleepNA
Steps
Swim

Battery

Duration5 days5 daysNA20 days36 hrs
Rechargeable

Compatibility

Android
iOSNA
Windows PhoneNANANA
MacNANA
WindowsNANA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
ResolutionNANANA360 x 360502x410 pixels
SizeNANANA1.3 inches1.92 inches
TouchNANANA
TypeLEDLEDNAAMOLED

Functions

Audio Speaker
ClockLTPO OLED Retina
PhoneNA
VibrationNA
Voice

Hardware

AccelerometerNA
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance1 ATMNANA5 ATM10 ATM (100 Meters)

Notifications

PhoneNA
EmailsNA
TextsNA

Software

Operating SystemNANANABuild-inWatchOS 9
Apps
Music

All Wearables