Withings Activite Sapphire vs. Apple Watch Series 2 vs. Casio WSD-F20A vs. Fitbit Flex vs. Polar Loop

 
Activite Sapphire
Watch Series 2
WSD-F20A
Flex
Loop
 WithingsActivite SapphireRemove Buy NowAppleWatch Series 2Remove Buy NowCasioWSD-F20ARemove Buy NowFitbitFlexRemove Buy NowPolarLoopRemove Buy Now

Basic Info

Suggested Price$450$269$399$100$100
Release20142016201820132013

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration8 months18 hours1 day5 days5 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/aNANA
Macn/aNA
Windowsn/aNA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/a340 x 272 or 390 x 312320 x 320NANA
Size1.3 inches1.5 inches or 1.65 inches1.32 inchesNANA
TouchNA
TypeAnalogAMOLEDLCDLEDLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATM5ATM5 ATM1 ATM2 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aWatch OSWear OSNANA
Apps
Music

All Wearables