Garmin Vivoactive vs. Fitbit Flex 2 vs. Huawei Talkband B2 vs. Garmin 645 Music vs. Amazfit T-Rex

 
Vivoactive
Flex 2
Talkband B2
645 Music
T-Rex
 GarminVivoactiveRemove Buy NowFitbitFlex 2Remove Buy NowHuaweiTalkband B2Remove Buy NowGarmin645 MusicRemove Buy NowAmazfitT-RexRemove Buy Now

Basic Info

Suggested Price$250$100$180$450$140
Release20152016201520182019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration14 hours to 11 days5 days3 days7 days20 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolution205 x 148n/a128 x 88240 x 240360 x 360
Size1.38 inchesn/a0.73 inches1.2 inches1.3 inches
Touchn/a
TypeLCDLEDPMOLEDMIPAMOLED

Functions

Audio SpeakerBluetooth
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATM5 ATMIP575 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/an/an/aBuild-in
Apps
Music

All Wearables