Fitbit Flex 2 vs. Apple Watch Series 2 vs. Fitbit Ionic vs. Asus ZenWatch vs. Casio WSD-F20A

 
Flex 2
Watch Series 2
Ionic
ZenWatch
WSD-F20A
 FitbitFlex 2Remove Buy NowAppleWatch Series 2Remove Buy NowFitbitIonicRemove Buy NowAsusZenWatchRemove Buy NowCasioWSD-F20ARemove Buy Now

Basic Info

Suggested Price$100$269$299$150$399
Release20162016201720142018

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5 days18 hours4+ daysNA1 day
Rechargeable

Compatibility

Android
iOS
Windows Phonen/aNA
MacNA
WindowsNA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolutionn/a340 x 272 or 390 x 312348x250320 x 320320 x 320
Sizen/a1.5 inches or 1.65 inches1.421.63 inches1.32 inches
Touchn/a
TypeLEDAMOLEDOLEDAMOLEDLCD

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATM5ATM50mIP555 ATM

Notifications

Phone
EmailsNA
TextsNA

Software

Operating Systemn/aWatch OSFitbit OSAndroid WearWear OS
Apps
Music

All Wearables