Apple Watch Series 3 vs. ASUS ZenWatch 2 vs. Fitbit Alta vs. Fitbit Inspire HR vs. Amazfit T-Rex

 
Watch Series 3
ZenWatch 2
Alta
Inspire HR
T-Rex
 AppleWatch Series 3Remove Buy NowASUSZenWatch 2Remove Buy NowFitbitAltaRemove Buy NowFitbitInspire HRRemove Buy NowAmazfitT-RexRemove Buy Now

Basic Info

Suggested Price$329$150$130$99$140
Release20172016201620192019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration18 hoursn/a5 days5 days20 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution340 x 272 or 390 x 312320 x 320n/a139 x 60360 x 360
Size1.5 inches or 1.65 inches1.63 inches or 1.45 inchn/a1.4 inches1.3 inches
Touchn/a
TypeAMOLEDAMOLEDOLEDOLEDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATMIP67n/a5 ATM5 ATM

Notifications

Phone
Emailsn/an/a
Textsn/a

Software

Operating SystemWatchOS 4Android Wearn/aFitbit OSBuild-in
Apps
Music

All Wearables