Fitbit Flex 2 vs. Apple Watch vs. Garmin Forerunner 235 vs. Pebble Core vs. Garmin Vivosmart 4

 
Flex 2
Watch
Forerunner 235
Core
Vivosmart 4
 FitbitFlex 2Remove Buy NowAppleWatchRemove Buy NowGarminForerunner 235Remove Buy NowPebbleCoreRemove Buy NowGarminVivosmart 4Remove Buy Now

Basic Info

Suggested Price$100$349$299.99$99$130
Release20162015201720162018

Activity & Fitness

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

Battery

Duration5 days18 hours9 daysNA7 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 312215 x 180NA48 x 128
Sizen/a1.5 inches or 1.65 inches1.23 inchesNA0.74 inches
Touchn/aNA
TypeLEDAMOLEDMIPNAOLED

Functions

Audio Speaker
Clock
PhoneNA
VibrationNA
Voice

Hardware

AccelerometerNA
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATMIPX75 ATMNA5 ATM

Notifications

PhoneNA
EmailsNA
TextsNA

Software

Operating Systemn/aWatch OSNA
Apps
Music

All Wearables