Fitbit Ionic vs. Amazfit Arc vs. Garmin 645 Music vs. Fitbit Flex vs. Amazfit GTS

 
Ionic
Arc
645 Music
Flex
GTS
 FitbitIonicRemove Buy NowAmazfitArcRemove Buy NowGarmin645 MusicRemove Buy NowFitbitFlexRemove Buy NowAmazfitGTSRemove Buy Now

Basic Info

Suggested Price$299$69.99$450$100$150
Release20172016201820132019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration4+ days20 days7 days5 days14 days
Rechargeable

Compatibility

Android
iOS
Windows PhoneNA
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution348x25072 x40240 x 240NA348 x 442
Size1.420.42 inches1.2 inchesNA1.65 inches
TouchNA
TypeOLEDOLEDMIPLEDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance50mIP675 ATM1 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemFitbit OSNAWear OS
Apps
Music

All Wearables