Apple Watch Series 3 vs. Apple Watch vs. Garmin 645 Music vs. Fitbit Flex vs. Apple Watch Series 5

 
Watch Series 3
Watch
645 Music
Flex
Watch Series 5
 AppleWatch Series 3Remove Buy NowAppleWatchRemove Buy NowGarmin645 MusicRemove Buy NowFitbitFlexRemove Buy NowAppleWatch Series 5Remove Buy Now

Basic Info

Suggested Price$329$349$450$100$329
Release20172015201820132019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration18 hours18 hours7 days5 daysNot Yet
Rechargeable

Compatibility

Android
iOS
Windows PhoneNANA
MacNA
WindowsNA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution340 x 272 or 390 x 312340 x 272 or 390 x 312240 x 240NA384 x 480
Size1.5 inches or 1.65 inches1.5 inches or 1.65 inches1.2 inchesNA1.78 Inches
TouchNA
TypeAMOLEDAMOLEDMIPLEDMicroLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATMIPX75 ATM1 ATMNot Yet

Notifications

Phone
Emails
Texts

Software

Operating SystemWatchOS 4Watch OSNAWatchOS 5
Apps
Music

All Wearables