Xiaomi Mi Band 2 vs. Garmin 645 Music vs. Mobvoi TicWatch S2 vs. Xiaomi Mi Band 4 vs. Amazfit T-Rex

 
Mi Band 2
645 Music
TicWatch S2
Mi Band 4
T-Rex
 XiaomiMi Band 2Remove Buy NowGarmin645 MusicRemove Buy NowMobvoiTicWatch S2Remove Buy NowXiaomiMi Band 4Remove Buy NowAmazfitT-RexRemove Buy Now

Basic Info

Suggested Price$23$450$180$25$140
Release20162018201920192019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Stepsn/a
Swim

Battery

Duration20 hours7 days2 DAYS20 days20 days
Rechargeable

Compatibility

Android
iOS
Windows Phone
Macn/a
Windowsn/a

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/a240 x 240400 x 400120x240360 x 360
Size0.42 inches1.2 inches1.39 inches0.95 inches1.3 inches
Touch
TypeOLEDMIPOLEDAMOLEDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceIP675 ATM5 ATM5 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aWear OSAMAZFIT OSBuild-in
Apps
Music

All Wearables