Fitbit Flex 2 vs. Polar Loop 2 vs. Garmin 645 Music vs. Garmin Forerunner 235 vs. Apple Watch Ultra

 
Flex 2
Loop 2
645 Music
Forerunner 235
Watch Ultra
 FitbitFlex 2Remove Buy NowPolarLoop 2Remove Buy NowGarmin645 MusicRemove Buy NowGarminForerunner 235Remove Buy NowAppleWatch UltraRemove Buy Now

Basic Info

Suggested Price$100$120$450$299.99$799
Release20162015201820172022

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heartn/a
Oxygen
Sleep
Steps
Swim

Battery

Duration5 days8 days (without notifications)7 days9 days36 hrs
Rechargeable

Compatibility

Android
iOS
Windows Phonen/an/a
Macn/a
Windowsn/a

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolutionn/an/a240 x 240215 x 180502x410 pixels
Sizen/an/a1.2 inches1.23 inches1.92 inches
Touchn/a
TypeLEDLEDMIPMIP

Functions

Audio Speaker
ClockLTPO OLED Retina
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATM2 ATM5 ATM5 ATM10 ATM (100 Meters)

Notifications

Phone
Emails
Texts

Software

Operating Systemn/an/aWatchOS 9
Apps
Music

All Wearables