Samsung Gear S2 vs. Fitbit Flex vs. Garmin Forerunner 45 vs. Garmin Vivosmart 4 vs. Amazfit GTS

 
Gear S2
Flex
Forerunner 45
Vivosmart 4
GTS
 SamsungGear S2Remove Buy NowFitbitFlexRemove Buy NowGarminForerunner 45Remove Buy NowGarminVivosmart 4Remove Buy NowAmazfitGTSRemove Buy Now

Basic Info

Suggested Price$300$100$199$130$150
Release20152013201920182019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration2-3 days5 days7 days7 days14 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellularn/a
GPSn/a
NFC
Wi-Fi

Display

Color
Resolution360 x 360NA208 x 20848 x 128348 x 442
Size1.2 inchesNA1.04 inches0.74 inches1.65 inches
TouchNA
TypeSuper AMOLEDLEDLCDOLEDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceIP681 ATM5 ATM5 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemTizenNABuilt-inWear OS
Apps
Music

All Wearables