Polar M400 vs. Fitbit One vs. Misfit Ray vs. Apple Watch Series 2 vs. Casio WSD-F20A

 
M400
One
Ray
Watch Series 2
WSD-F20A
 PolarM400Remove Buy NowFitbitOneRemove Buy NowMisfitRayRemove Buy NowAppleWatch Series 2Remove Buy NowCasioWSD-F20ARemove Buy Now

Basic Info

Suggested Price$200$100$100$269$399
Release20142012201620162018

Activity & Fitness

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

Battery

Duration8 hours to 30 days10-14 days6 months18 hours1 day
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolutionn/an/an/a340 x 272 or 390 x 312320 x 320
Sizen/an/an/a1.5 inches or 1.65 inches1.32 inches
Touchn/a
Typen/aOLEDLEDAMOLEDLCD

Functions

Audio SpeakerAlerts only
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance3 ATMSplast Resistant5 ATM5ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/an/an/aWatch OSWear OS
Apps
Music

All Wearables