Garmin Fenix 3 vs. Polar M400 vs. Samsung Gear S2 vs. Mobvoi TicWatch E vs. Amazfit T-Rex

 
Fenix 3
M400
Gear S2
TicWatch E
T-Rex
 GarminFenix 3Remove Buy NowPolarM400Remove Buy NowSamsungGear S2Remove Buy NowMobvoiTicWatch ERemove Buy NowAmazfitT-RexRemove Buy Now

Basic Info

Suggested Price$500$200$300$159$140
Release20152014201520172019

Activity & Fitness

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

Battery

Duration50 hours to 6 weeks8 hours to 30 days2-3 days1.5-2 days20 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellularn/a
GPSn/a
NFC
Wi-Fi

Display

Color
Resolution218 x 218n/a360 x 360400 x 400360 x 360
Size1.2 inchesn/a1.2 inches1.4 inches1.3 inches
Touch
TypeChroma LEDn/aSuper AMOLEDOLEDAMOLED

Functions

Audio SpeakerAlerts only
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance10 ATM3 ATMIP68IP675 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/an/aTizenAndroid Wear 2.0Build-in
Apps
Music

All Wearables