Fitbit Flex 2 vs. Apple Watch Series 2 vs. Pebble Core vs. Apple Watch Series 4 vs. Amazfit GTS

 
Flex 2
Watch Series 2
Core
Watch Series 4
GTS
 FitbitFlex 2Remove Buy NowAppleWatch Series 2Remove Buy NowPebbleCoreRemove Buy NowAppleWatch Series 4Remove Buy NowAmazfitGTSRemove Buy Now

Basic Info

Suggested Price$100$269$99$329$150
Release20162016201620182019

Activity & Fitness

Calories
Cycling (Bicycling)NA
Distance
Heart
Oxygen
SleepNA
Steps
Swim

Battery

Duration5 days18 hoursNANot Yet14 days
Rechargeable

Compatibility

Android
iOSNA
Windows Phonen/aNA
MacNA
WindowsNA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolutionn/a340 x 272 or 390 x 312NA384 x 480348 x 442
Sizen/a1.5 inches or 1.65 inchesNA1.78 inches1.65 inches
Touchn/aNA
TypeLEDAMOLEDNAMicroLEDAMOLED

Functions

Audio Speaker
Clock
PhoneNA
VibrationNA
Voice

Hardware

AccelerometerNA
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATM5ATMNANot Yet5 ATM

Notifications

PhoneNA
EmailsNA
TextsNA

Software

Operating Systemn/aWatch OSNAWatch OS 5Wear OS
Apps
Music

All Wearables