Samsung Gear S3 vs. Samsung Gear Fit2 vs. Fitbit Alta HR vs. Polar A370 vs. Amazfit T-Rex

 
Gear S3
Gear Fit2
Alta HR
A370
T-Rex
 SamsungGear S3Remove Buy NowSamsungGear Fit2Remove Buy NowFitbitAlta HRRemove Buy NowPolarA370Remove Buy NowAmazfitT-RexRemove Buy Now

Basic Info

Suggested Price$350$180$150$179.95$140
Release20162016201720172019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleepn/a
Steps
Swim

Battery

Duration4 days3-4 days7 daysUp to 3 days20 days
Rechargeable

Compatibility

Android
iOS
Windows Phone
Macn/an/a
Windowsn/an/a

Connectivity

Bluetooth
Cellularn/a
GPS
NFCn/a
Wi-Fi

Display

Color
Resolution360 x 360432 x 216128 x 36160 x 80360 x 360
Size1.3 inches1.5 inches1.4 inches1.18 inches1.3 inches
Touch
TypeFullcolor AODSuper AMOLEDOLEDTFT LCDAMOLED

Functions

Audio SpeakerBluetooth
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceIP68IP68WR305 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemTizenTizenBuild-in
Apps
Music

All Wearables