Pebble Time Round vs. Withings Activite Sapphire vs. Casio WSD-F20A vs. Fitbit Flex vs. Polar Loop

 
Time Round
Activite Sapphire
WSD-F20A
Flex
Loop
 PebbleTime RoundRemove Buy NowWithingsActivite SapphireRemove Buy NowCasioWSD-F20ARemove Buy NowFitbitFlexRemove Buy NowPolarLoopRemove Buy Now

Basic Info

Suggested Price$200$450$399$100$100
Release20152014201820132013

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration2 days8 months1 day5 days5 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/an/a320 x 320NANA
Sizeround1.3 inches1.32 inchesNANA
TouchNA
Typee-paperAnalogLCDLEDLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceIPX75 ATM5 ATM1 ATM2 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemPebble OSn/aWear OSNANA
Apps
Music

All Wearables