Polar M600 vs. Withings Activite Sapphire vs. Fitbit Flex 2 vs. Casio WSD-F20A vs. Samsung Galaxy Watch

 
M600
Activite Sapphire
Flex 2
WSD-F20A
Galaxy Watch
 PolarM600Remove Buy NowWithingsActivite SapphireRemove Buy NowFitbitFlex 2Remove Buy NowCasioWSD-F20ARemove Buy NowSamsungGalaxy WatchRemove Buy Now

Basic Info

Suggested Price$330$450$100$399$330
Release20162014201620182018

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration2 days8 months5 days1 day7 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
CellularNA
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolution240 x 240n/an/a320 x 320360 x 360
Size1.3 inches1.3 inchesn/a1.32 inches1.2 inches or 1.3 inches
Touchn/an/a
TypeTFTAnalogLEDLCDAMOLED

Functions

Audio SpeakerAlerts only
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceIPX85 ATM5 ATM5 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemAndroid Wearn/an/aWear OSTizen OS
Apps
MusicSpotify

All Wearables