Fitbit Flex 2 vs. Garmin Forerunner 935 vs. Casio WSD-F20A vs. Fitbit Alta HR vs. Garmin Forerunner 45

 
Flex 2
Forerunner 935
WSD-F20A
Alta HR
Forerunner 45
 FitbitFlex 2Remove Buy NowGarminForerunner 935Remove Buy NowCasioWSD-F20ARemove Buy NowFitbitAlta HRRemove Buy NowGarminForerunner 45Remove Buy Now

Basic Info

Suggested Price$100$500$399$150$199
Release20162017201820172019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5 daysUp to 2 weeks1 day7 days7 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/a
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolutionn/a240 x 240320 x 320128 x 36208 x 208
Sizen/a1.2 inches1.32 inches1.4 inches1.04 inches
Touchn/a
TypeLEDLCDLCDOLEDLCD

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

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

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aWear OSBuilt-in
Apps
Music

All Wearables