Fitbit One vs. Fitbit Zip vs. Garmin 645 Music vs. Amazfit T-Rex vs. Garmin VivoActive 4

 
One
Zip
645 Music
T-Rex
VivoActive 4
 FitbitOneRemove Buy NowFitbitZipRemove Buy NowGarmin645 MusicRemove Buy NowAmazfitT-RexRemove Buy NowGarminVivoActive 4Remove Buy Now

Basic Info

Suggested Price$100$60$450$140$349
Release20122012201820192019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration10-14 days6 months7 days20 days8 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/an/a
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/an/a240 x 240360 x 360260 x 260
Sizen/an/a1.2 inches1.3 inches1.3ionches
Touch
TypeOLEDn/aMIPAMOLEDMIP

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceSplast ResistantSplash Resistant5 ATM5 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/an/aBuild-inWear OS
Apps
Music

All Wearables