Fitbit Flex 2 vs. Apple Watch vs. Pebble Core vs. Diesel On Full Guard 2.5 vs. Garmin Forerunner 45

 
Flex 2
Watch
Core
On Full Guard 2.5
Forerunner 45
 FitbitFlex 2Remove Buy NowAppleWatchRemove Buy NowPebbleCoreRemove Buy NowDieselOn Full Guard 2.5Remove Buy NowGarminForerunner 45Remove Buy Now

Basic Info

Suggested Price$100$349$99$325$199
Release20162015201620182019

Activity & Fitness

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

Battery

Duration5 days18 hoursNA4 days7 days
Rechargeable

Compatibility

Android
iOSNA
Windows Phonen/aNANA
MacNANA
WindowsNANA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolutionn/a340 x 272 or 390 x 312NA454x454208 x 208
Sizen/a1.5 inches or 1.65 inchesNA1.39 inches1.04 inches
Touchn/aNA
TypeLEDAMOLEDNALCD

Functions

Audio Speaker
Clock
PhoneNA
VibrationNA
Voice

Hardware

AccelerometerNA
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATMIPX7NA3 ATM5 ATM

Notifications

PhoneNA
EmailsNA
TextsNA

Software

Operating Systemn/aWatch OSNAWear OSBuilt-in
Apps
Music

All Wearables