Polar V800 vs. Polar Loop 2 vs. Amazfit Stratos vs. Fitbit Alta HR vs. Apple Series 6

 
V800
Loop 2
Stratos
Alta HR
Series 6
 PolarV800Remove Buy NowPolarLoop 2Remove Buy NowAmazfitStratosRemove Buy NowFitbitAlta HRRemove Buy NowAppleSeries 6Remove Buy Now

Basic Info

Suggested Price$470$120$199$150$399
Release20142015201820172020

Activity & Fitness

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

Battery

Duration13 hours to 30 days8 days (without notifications)5 days7 daysNot yet
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/an/a320 x 300128 x 36384 x 480
Sizen/an/a1.34 inches1.4 inches40mm
Touch
Typen/aLEDOLEDOLEDMicroLED

Functions

Audio SpeakerAlerts only
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor5 ATM
Water Resistance3 ATM2 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/an/aProprietaryWatchOS 5
Apps
Music

All Wearables