Garmin Forerunner 935 vs. Amazfit Bip vs. Garmin 645 Music vs. Fitbit Flex vs. Garmin Vivofit 4

 
Forerunner 935
Bip
645 Music
Flex
Vivofit 4
 GarminForerunner 935Remove Buy NowAmazfitBipRemove Buy NowGarmin645 MusicRemove Buy NowFitbitFlexRemove Buy NowGarminVivofit 4Remove Buy Now

Basic Info

Suggested Price$500$99.99$450$100$79.95
Release20172018201820132018

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

DurationUp to 2 weeks30 days7 days5 days1 year
Rechargeable

Compatibility

Android
iOS
Windows PhoneNA
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution240 x 240176 x 176240 x 240NA88 x 88
Size1.2 inches1.28 inches1.2 inchesNANA
TouchNA
TypeLCDNAMIPLEDNA

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATMIP685 ATM1 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemNA
Apps
Music

All Wearables