Fitbit Alta vs. Garmin 645 Music vs. Fitbit Flex vs. Diesel On Full Guard 2.5 vs. Amazfit GTS

 
Alta
645 Music
Flex
On Full Guard 2.5
GTS
 FitbitAltaRemove Buy NowGarmin645 MusicRemove Buy NowFitbitFlexRemove Buy NowDieselOn Full Guard 2.5Remove Buy NowAmazfitGTSRemove Buy Now

Basic Info

Suggested Price$130$450$100$325$150
Release20162018201320182019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5 days7 days5 days4 days14 days
Rechargeable

Compatibility

Android
iOS
Windows PhoneNA
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/a240 x 240NA454x454348 x 442
Sizen/a1.2 inchesNA1.39 inches1.65 inches
Touchn/aNA
TypeOLEDMIPLEDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistancen/a5 ATM1 ATM3 ATM5 ATM

Notifications

Phone
Emailsn/a
Texts

Software

Operating Systemn/aNAWear OSWear OS
Apps
Music

All Wearables