Polar M600 vs. Fitbit One vs. Moov Now vs. Fitbit Charge 3 vs. Amazfit T-Rex

 
M600
One
Now
Charge 3
T-Rex
 PolarM600Remove Buy NowFitbitOneRemove Buy NowMoovNowRemove Buy NowFitbitCharge 3Remove Buy NowAmazfitT-RexRemove Buy Now

Basic Info

Suggested Price$330$100$79$150$140
Release20162012201520182019

Activity & Fitness

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

Battery

Duration2 days10-14 days6 months7 days20 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFCNA
Wi-Fi

Display

Color
Resolution240 x 240n/an/a66 x 18360 x 360
Size1.3 inchesn/an/a.721 inches1.3 inches
Touchn/an/a
TypeTFTOLEDn/aOLEDAMOLED

Functions

Audio SpeakerAlerts only
Clock
Phone
Vibrationn/a
Voice

Hardware

Accelerometer
Barometer or Altimetern/a
Ultraviolet Sensor
Water ResistanceIPX8Splast Resistantn/a5 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemAndroid Wearn/an/aNABuild-in
Apps
Music

All Wearables