Apple Watch Series 3 vs. Fitbit Flex 2 vs. ASUS ZenWatch 3 vs. Casio WSD-F20A vs. Fitbit Flex

 
Watch Series 3
Flex 2
ZenWatch 3
WSD-F20A
Flex
 AppleWatch Series 3Remove Buy NowFitbitFlex 2Remove Buy NowASUSZenWatch 3Remove Buy NowCasioWSD-F20ARemove Buy NowFitbitFlexRemove Buy Now

Basic Info

Suggested Price$329$100$229$399$100
Release20172016201720182013

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration18 hours5 days48 hours1 day5 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/aNA
Mac
Windows

Connectivity

BluetoothYes
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolution340 x 272 or 390 x 312n/a400 x 400320 x 320NA
Size1.5 inches or 1.65 inchesn/a1.39 inches1.32 inchesNA
Touchn/aNA
TypeAMOLEDLEDAMOLEDLCDLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATM5 ATM5 ATM1 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemWatchOS 4n/aAndroid Wear 2Wear OSNA
Apps
Music

All Wearables