Fitbit Flex 2 vs. Apple Watch Series 2 vs. Casio WSD-F20A vs. Apple SE vs. Apple Watch Ultra

 
Flex 2
Watch Series 2
WSD-F20A
SE
Watch Ultra
 FitbitFlex 2Remove Buy NowAppleWatch Series 2Remove Buy NowCasioWSD-F20ARemove Buy NowAppleSERemove Buy NowAppleWatch UltraRemove Buy Now

Basic Info

Suggested Price$100$269$399$279$799
Release20162016201820202022

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5 days18 hours1 day18 hours36 hrs
Rechargeable

Compatibility

Android
iOS
Windows Phonen/a
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolutionn/a340 x 272 or 390 x 312320 x 320384 x 480502x410 pixels
Sizen/a1.5 inches or 1.65 inches1.32 inches40mm1.92 inches
Touchn/a
TypeLEDAMOLEDLCDMicroLED

Functions

Audio Speaker
ClockLTPO OLED Retina
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet SensorNot yet
Water Resistance5 ATM5ATM5 ATM10 ATM (100 Meters)

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aWatch OSWear OSWatchOS 5WatchOS 9
Apps
Music

All Wearables