Apple Watch Series 3 vs. Fitbit Flex 2 vs. Pebble Time 2 vs. Xiaomi Mi Band 4 vs. Amazfit T-Rex

 
Watch Series 3
Flex 2
Time 2
Mi Band 4
T-Rex
 AppleWatch Series 3Remove Buy NowFitbitFlex 2Remove Buy NowPebbleTime 2Remove Buy NowXiaomiMi Band 4Remove Buy NowAmazfitT-RexRemove Buy Now

Basic Info

Suggested Price$329$100$199$25$140
Release20172016201620192019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration18 hours5 days10 days20 days20 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/aNA
MacNA
WindowsNA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolution340 x 272 or 390 x 312n/aNA120x240360 x 360
Size1.5 inches or 1.65 inchesn/aNA0.95 inches1.3 inches
Touchn/a
TypeAMOLEDLEDe-paperAMOLEDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATM5 ATM3 ATM5 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemWatchOS 4n/aPebble OSAMAZFIT OSBuild-in
Apps
Music

All Wearables