Fitbit One vs. Diesel On Full Guard vs. Michael Kors Grayson vs. Polar A370 vs. Apple Watch Series 4 vs. Michael Kors Grayson

 
One
On Full Guard
Grayson
A370
Watch Series 4
Grayson
 FitbitOneRemove Buy NowDieselOn Full GuardRemove Buy NowMichael KorsGraysonRemove Buy NowPolarA370Remove Buy NowAppleWatch Series 4Remove Buy NowMichael KorsGraysonRemove Buy Now

Basic Info

Suggested Price$100$325$350$179.95$329$350
Release201220172018201720182018

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration10-14 days1 day24 hoursUp to 3 daysNot Yet24 hours
Rechargeable

Compatibility

Android
iOS
Windows Phonen/a
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/a454 x 454453 x 454160 x 80384 x 480453x454
Sizen/a1.4 inches1.39 inches1.18 inches1.78 inches1.39 inches
Touch
TypeOLEDOMOLEDAMOLEDTFT LCDMicroLEDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceSplast ResistantIP671 ATMWR30Not Yet1 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aAndroid Wear 2.0Android WearWatch OS 5Android Wear
Apps
Music

All Wearables