Apple Watch Series 3 vs. Garmin Forerunner 735XT vs. Fitbit Ionic vs. Fitbit Flex vs. Garmin Vivosmart 4

 
Watch Series 3
Forerunner 735XT
Ionic
Flex
Vivosmart 4
 AppleWatch Series 3Remove Buy NowGarminForerunner 735XTRemove Buy NowFitbitIonicRemove Buy NowFitbitFlexRemove Buy NowGarminVivosmart 4Remove Buy Now

Basic Info

Suggested Price$329$450$299$100$130
Release20172016201720132018

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration18 hours14 hours to 11 days4+ days5 days7 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution340 x 272 or 390 x 312215 x 180348x250NA48 x 128
Size1.5 inches or 1.65 inches1.23 inches1.42NA0.74 inches
Touchn/aNA
TypeAMOLEDn/aOLEDLEDOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATM5 ATM50m1 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemWatchOS 4n/aFitbit OSNA
Apps
Music

All Wearables