Fitbit One vs. Polar Loop 2 vs. Fitbit Flex vs. Polar A370 vs. Garmin Forerunner 45

 
One
Loop 2
Flex
A370
Forerunner 45
 FitbitOneRemove Buy NowPolarLoop 2Remove Buy NowFitbitFlexRemove Buy NowPolarA370Remove Buy NowGarminForerunner 45Remove Buy Now

Basic Info

Suggested Price$100$120$100$179.95$199
Release20122015201320172019

Activity & Fitness

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

Battery

Duration10-14 days8 days (without notifications)5 daysUp to 3 days7 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/an/aNA160 x 80208 x 208
Sizen/an/aNA1.18 inches1.04 inches
TouchNA
TypeOLEDLEDLEDTFT LCDLCD

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceSplast Resistant2 ATM1 ATMWR305 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/an/aNABuilt-in
Apps
Music

All Wearables