Samsung Gear S2 vs. Fitbit Alta vs. Fitbit Flex 2 vs. Garmin Forerunner 235 vs. Amazfit GTR

 
Gear S2
Alta
Flex 2
Forerunner 235
GTR
 SamsungGear S2Remove Buy NowFitbitAltaRemove Buy NowFitbitFlex 2Remove Buy NowGarminForerunner 235Remove Buy NowAmazfitGTRRemove Buy Now

Basic Info

Suggested Price$300$130$100$299.99$199
Release20152016201620172019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration2-3 days5 days5 days9 days24 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellularn/a
GPSn/a
NFC
Wi-Fi

Display

Colorn/a
Resolution360 x 360n/an/a215 x 180454 x 454
Size1.2 inchesn/an/a1.23 inches1.39 inches
Touchn/an/a
TypeSuper AMOLEDOLEDLEDMIPAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceIP68n/a5 ATM5 ATM5 ATM

Notifications

Phone
Emailsn/a
Texts

Software

Operating SystemTizenn/an/aBuild-in
Apps
Music

All Wearables