Polar Loop 2 vs. Garmin Fenix 5s vs. Amazfit Stratos vs. Fitbit Flex vs. Amazfit GTS

 
Loop 2
Fenix 5s
Stratos
Flex
GTS
 PolarLoop 2Remove Buy NowGarminFenix 5sRemove Buy NowAmazfitStratosRemove Buy NowFitbitFlexRemove Buy NowAmazfitGTSRemove Buy Now

Basic Info

Suggested Price$120$599.99$199$100$150
Release20152017201820132019

Activity & Fitness

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

Battery

Duration8 days (without notifications)Up to 9 days5 days5 days14 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/a218x 218320 x 300NA348 x 442
Sizen/a1.1 inches1.34 inchesNA1.65 inches
TouchNA
TypeLEDnaOLEDLEDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance2 ATM10ATM5 ATM1 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aProprietaryNAWear OS
Apps
Music

All Wearables