Garmin Forerunner 735XT vs. Fitbit Alta vs. Garmin 645 Music vs. Amazfit T-Rex vs. HTC re Grip

 
Forerunner 735XT
Alta
645 Music
T-Rex
re Grip
 GarminForerunner 735XTRemove Buy NowFitbitAltaRemove Buy NowGarmin645 MusicRemove Buy NowAmazfitT-RexRemove Buy NowHTCre GripRemove Buy Now

Basic Info

Suggested Price$450$130$450$140$199
Release20162016201820192020

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration14 hours to 11 days5 days7 days20 days5 hours to 2.5 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution215 x 180n/a240 x 240360 x 360160 x 32
Size1.23 inchesn/a1.2 inches1.3 inches1.8 inches
Touchn/an/a
Typen/aOLEDMIPAMOLEDPMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATMn/a5 ATM5 ATMIP57

Notifications

Phone
Emailsn/a
Texts

Software

Operating Systemn/an/aBuild-inNA
Apps
Music

All Wearables