Fitbit Flex 2 vs. Apple Watch vs. Fitbit Flex vs. Garmin Vivosmart 4 vs. Amazfit GTS

 
Flex 2
Watch
Flex
Vivosmart 4
GTS
 FitbitFlex 2Remove Buy NowAppleWatchRemove Buy NowFitbitFlexRemove Buy NowGarminVivosmart 4Remove Buy NowAmazfitGTSRemove Buy Now

Basic Info

Suggested Price$100$349$100$130$150
Release20162015201320182019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5 days18 hours5 days7 days14 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/aNANA
MacNA
WindowsNA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolutionn/a340 x 272 or 390 x 312NA48 x 128348 x 442
Sizen/a1.5 inches or 1.65 inchesNA0.74 inches1.65 inches
Touchn/aNA
TypeLEDAMOLEDLEDOLEDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATMIPX71 ATM5 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aWatch OSNAWear OS
Apps
Music

All Wearables