Polar M400 vs. Fitbit Ionic vs. Motorola Moto 360 (1st Gen) vs. Diesel On Full Guard 2.5 vs. Fitbit Versa 2

 
M400
Ionic
Moto 360 (1st Gen)
On Full Guard 2.5
Versa 2
 PolarM400Remove Buy NowFitbitIonicRemove Buy NowMotorolaMoto 360 (1st Gen)Remove Buy NowDieselOn Full Guard 2.5Remove Buy NowFitbitVersa 2Remove Buy Now

Basic Info

Suggested Price$200$299$150$325$199
Release20142017201420182019

Activity & Fitness

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

Battery

Duration8 hours to 30 days4+ days1 day4 days5 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/aNA
MacNA
WindowsNA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/a348x250320 x 260454x454300 x 300
Sizen/a1.421.56 inches1.39 inches1.34 inches
Touch
Typen/aOLEDLCDAMOLED

Functions

Audio SpeakerAlerts only
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance3 ATM50mIP673 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aFitbit OSAndroid WearWear OSBuild-in
Apps
MusicNA

All Wearables