Apple Watch Series 3 vs. Fitbit Flex 2 vs. Garmin Vivosmart HR vs. Garmin Fenix 5s vs. Garmin 645 Music

 
Watch Series 3
Flex 2
Vivosmart HR
Fenix 5s
645 Music
 AppleWatch Series 3Remove Buy NowFitbitFlex 2Remove Buy NowGarminVivosmart HRRemove Buy NowGarminFenix 5sRemove Buy NowGarmin645 MusicRemove Buy Now

Basic Info

Suggested Price$329$100$170$599.99$450
Release20172016201520172018

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration18 hours5 days5 daysUp to 9 days7 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/an/a
Macn/a
Windowsn/a

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolution340 x 272 or 390 x 312n/a160 x 68218x 218240 x 240
Size1.5 inches or 1.65 inchesn/a1.08 inches1.1 inches1.2 inches
Touchn/a
TypeAMOLEDLEDn/anaMIP

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATM5 ATM5 ATM10ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemWatchOS 4n/an/a
Apps
Music

All Wearables