Fitbit Flex 2 vs. Jawbone UP24 vs. Polar Loop vs. Apple Watch Series 4

 
Flex 2
UP24
Loop
Watch Series 4
 FitbitFlex 2Remove Buy NowJawboneUP24Remove Buy NowPolarLoopRemove Buy NowAppleWatch Series 4Remove Buy Now

Basic Info

Suggested Price$100$130$100$329
Release2016201320132018

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5 days14 days5 daysNot Yet
Rechargeable

Compatibility

Android
iOS
Windows Phonen/aNANA
MacNANA
WindowsNANA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolutionn/aNANA384 x 480
Sizen/aNANA1.78 inches
Touchn/aNA
TypeLEDNALEDMicroLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATMSplash Resistant2 ATMNot Yet

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aNANAWatch OS 5
Apps
Music

All Wearables