Garmin Forerunner 225 vs. Fitbit Alta vs. Fitbit Flex vs. Amazfit T-Rex vs. Apple Series 6

 
Forerunner 225
Alta
Flex
T-Rex
Series 6
 GarminForerunner 225Remove Buy NowFitbitAltaRemove Buy NowFitbitFlexRemove Buy NowAmazfitT-RexRemove Buy NowAppleSeries 6Remove Buy Now

Basic Info

Suggested Price$300$130$100$140$399
Release20152016201320192020

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration10 hours to 4 weeks5 days5 days20 daysNot yet
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution180 x 180n/aNA360 x 360384 x 480
Size1 inchn/aNA1.3 inches40mm
Touchn/aNA
Typen/aOLEDLEDAMOLEDMicroLED

Functions

Audio Speaker22
Clock
Phonen/a
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor5 ATM
Water Resistance5 ATMn/a1 ATM5 ATM

Notifications

Phonen/a
Emailsn/an/a
Textsn/a

Software

Operating Systemn/an/aNABuild-inWatchOS 5
Appsn/a
Musicn/a

All Wearables