TomTom Spark vs. Withings Activite Sapphire vs. Polar Loop 2 vs. Garmin Forerunner 935 vs. Amazfit Stratos

 
Spark
Activite Sapphire
Loop 2
Forerunner 935
Stratos
 TomTomSparkRemove Buy NowWithingsActivite SapphireRemove Buy NowPolarLoop 2Remove Buy NowGarminForerunner 935Remove Buy NowAmazfitStratosRemove Buy Now

Basic Info

Suggested Price$150$450$120$500$199
Release20152014201520172018

Activity & Fitness

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

Battery

Durationn/a8 months8 days (without notifications)Up to 2 weeks5 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolutionn/an/an/a240 x 240320 x 300
Sizen/a1.3 inchesn/a1.2 inches1.34 inches
Touch
TypeLCDAnalogLEDLCDOLED

Functions

Audio SpeakerBluetooth
Clock
Phonen/a
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATM5 ATM2 ATM5 ATM5 ATM

Notifications

Phonen/a
Emailsn/a
Textsn/a

Software

Operating Systemn/an/an/aProprietary
Apps
Music

All Wearables