Polar M400 vs. Samsung Gear S3 vs. Fitbit Flex 2 vs. Motorola Moto 360 (1st Gen) vs. Garmin Forerunner 45

 
M400
Gear S3
Flex 2
Moto 360 (1st Gen)
Forerunner 45
 PolarM400Remove Buy NowSamsungGear S3Remove Buy NowFitbitFlex 2Remove Buy NowMotorolaMoto 360 (1st Gen)Remove Buy NowGarminForerunner 45Remove Buy Now

Basic Info

Suggested Price$200$350$100$150$199
Release20142016201620142019

Activity & Fitness

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

Battery

Duration8 hours to 30 days4 days5 days1 day7 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellularn/a
GPS
NFCn/a
Wi-Fi

Display

Colorn/a
Resolutionn/a360 x 360n/a320 x 260208 x 208
Sizen/a1.3 inchesn/a1.56 inches1.04 inches
Touchn/a
Typen/aFullcolor AODLEDLCDLCD

Functions

Audio SpeakerAlerts only
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance3 ATMIP685 ATMIP675 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aTizenn/aAndroid WearBuilt-in
Apps
MusicNA

All Wearables