Pebble Time Round vs. Polar M400 vs. TomTom Spark vs. Casio WSD-F20A vs. Polar Loop

 
Time Round
M400
Spark
WSD-F20A
Loop
 PebbleTime RoundRemove Buy NowPolarM400Remove Buy NowTomTomSparkRemove Buy NowCasioWSD-F20ARemove Buy NowPolarLoopRemove Buy Now

Basic Info

Suggested Price$200$200$150$399$100
Release20152014201520182013

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heartn/an/a
Oxygen
Sleep
Steps
Swim

Battery

Duration2 days8 hours to 30 daysn/a1 day5 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolutionn/an/an/a320 x 320NA
Sizeroundn/an/a1.32 inchesNA
Touch
Typee-papern/aLCDLCDLED

Functions

Audio SpeakerAlerts onlyBluetooth
Clock
Phonen/a
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceIPX73 ATM5 ATM5 ATM2 ATM

Notifications

Phonen/a
Emailsn/a
Textsn/a

Software

Operating SystemPebble OSn/an/aWear OSNA
Apps
Music

All Wearables