TomTom Spark vs. Fitbit One vs. Polar Loop 2 vs. Withings Go vs. Fitbit Flex

 
Spark
One
Loop 2
Go
Flex
 TomTomSparkRemove Buy NowFitbitOneRemove Buy NowPolarLoop 2Remove Buy NowWithingsGoRemove Buy NowFitbitFlexRemove Buy Now

Basic Info

Suggested Price$150$100$120$80$100
Release20152012201520162013

Activity & Fitness

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

Battery

Durationn/a10-14 days8 days (without notifications)8 months5 days
Rechargeable

Compatibility

Androidn/a
iOSn/a
Windows Phonen/an/an/an/aNA
Macn/an/a
Windowsn/an/a

Connectivity

Bluetoothn/a
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/an/a
Resolutionn/an/an/an/aNA
Sizen/an/an/an/aNA
Touchn/aNA
TypeLCDOLEDLEDE-InkLED

Functions

Audio SpeakerBluetooth
Clock
Phonen/an/a
Vibrationn/a
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATMSplast Resistant2 ATM5 ATM1 ATM

Notifications

Phonen/an/a
Emailsn/an/a
Textsn/an/a

Software

Operating Systemn/an/an/an/aNA
Appsn/a
Music

All Wearables