Garmin Fenix 3 vs. Polar M400 vs. ASUS ZenWatch 3 vs. Fitbit Flex vs. Apple Watch 7

 
Fenix 3
M400
ZenWatch 3
Flex
Watch 7
 GarminFenix 3Remove Buy NowPolarM400Remove Buy NowASUSZenWatch 3Remove Buy NowFitbitFlexRemove Buy NowAppleWatch 7Remove Buy Now

Basic Info

Suggested Price$500$200$229$100$429
Release20152014201720132021

Activity & Fitness

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

Battery

Duration50 hours to 6 weeks8 hours to 30 days48 hours5 days18 Hours
Rechargeable

Compatibility

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

Connectivity

BluetoothYes
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution218 x 218n/a400 x 400NA396 x 484
Size1.2 inchesn/a1.39 inchesNA1.9 inches
TouchNA
TypeChroma LEDn/aAMOLEDLEDMicroLED

Functions

Audio SpeakerAlerts only
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance10 ATM3 ATM1 ATMwater resistant but not waterproof

Notifications

Phone
Emails
Texts

Software

Operating Systemn/an/aAndroid Wear 2NAWatchOS 8
Apps
Music

All Wearables