Casio G-Shock GBA800 vs. Garmin 645 Music vs. Fitbit Alta HR vs. Garmin Vivosmart HR Plus vs. Apple Series 6

 
G-Shock GBA800
645 Music
Alta HR
Vivosmart HR Plus
Series 6
 CasioG-Shock GBA800Remove Buy NowGarmin645 MusicRemove Buy NowFitbitAlta HRRemove Buy NowGarminVivosmart HR PlusRemove Buy NowAppleSeries 6Remove Buy Now

Basic Info

Suggested Price$120$450$150$179$399
Release20182018201720172020

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration2 years7 days7 days5 daysNot yet
Rechargeable

Compatibility

Android
iOS
Windows Phone
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution240 x 240128 x 36160 x 68384 x 480
Size1.2 inches1.4 inches0.5 inches x 0.8 inches40mm
Touch
TypeMIPOLEDLCDMicroLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor5 ATM
Water Resistance20 ATM5 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemNAWatchOS 5
Apps
Music

All Wearables