Fitbit Alta vs. Fitbit Flex 2 vs. Garmin 645 Music vs. Jawbone UP24 vs. Amazfit T-Rex

 
Alta
Flex 2
645 Music
UP24
T-Rex
 FitbitAltaRemove Buy NowFitbitFlex 2Remove Buy NowGarmin645 MusicRemove Buy NowJawboneUP24Remove Buy NowAmazfitT-RexRemove Buy Now

Basic Info

Suggested Price$130$100$450$130$140
Release20162016201820132019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5 days5 days7 days14 days20 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/aNA
MacNA
WindowsNA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolutionn/an/a240 x 240NA360 x 360
Sizen/an/a1.2 inchesNA1.3 inches
Touchn/an/aNA
TypeOLEDLEDMIPNAAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistancen/a5 ATM5 ATMSplash Resistant5 ATM

Notifications

Phone
Emailsn/a
Texts

Software

Operating Systemn/an/aNABuild-in
Apps
Music

All Wearables