Amazfit Stratos vs. Garmin 645 Music vs. Fitbit Flex vs. Garmin Vivosmart 3 vs. Garmin Venu

 
Stratos
645 Music
Flex
Vivosmart 3
Venu
 AmazfitStratosRemove Buy NowGarmin645 MusicRemove Buy NowFitbitFlexRemove Buy NowGarminVivosmart 3Remove Buy NowGarminVenuRemove Buy Now

Basic Info

Suggested Price$199$450$100$139.99$299
Release20182018201320172019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5 days7 days5 days5 days5 days
Rechargeable

Compatibility

Android
iOS
Windows PhoneNA
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution320 x 300240 x 240NA64 x 128390 x 390
Size1.34 inches1.2 inchesNANA1.2 inches
TouchNA
TypeOLEDMIPLEDOLEDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATM5 ATM1 ATM5 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemProprietaryNAWear OS
Apps
Music

All Wearables