Apple Watch Series 3 vs. Fitbit Alta vs. Apple Watch Series 2 vs. Fitbit Versa 2 vs. Amazfit T-Rex

 
Watch Series 3
Alta
Watch Series 2
Versa 2
T-Rex
 AppleWatch Series 3Remove Buy NowFitbitAltaRemove Buy NowAppleWatch Series 2Remove Buy NowFitbitVersa 2Remove Buy NowAmazfitT-RexRemove Buy Now

Basic Info

Suggested Price$329$130$269$199$140
Release20172016201620192019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration18 hours5 days18 hours5 days20 days
Rechargeable

Compatibility

Android
iOS
Windows Phone
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution340 x 272 or 390 x 312n/a340 x 272 or 390 x 312300 x 300360 x 360
Size1.5 inches or 1.65 inchesn/a1.5 inches or 1.65 inches1.34 inches1.3 inches
Touchn/a
TypeAMOLEDOLEDAMOLEDAMOLEDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATMn/a5ATM5 ATM5 ATM

Notifications

Phone
Emailsn/a
Texts

Software

Operating SystemWatchOS 4n/aWatch OSBuild-inBuild-in
Apps
Music

All Wearables