Fitbit Alta vs. Fitbit Flex 2 vs. Casio G-Shock GBA800 vs. Garmin 645 Music vs. Michael Kors Access Sofie HR

 
Alta
Flex 2
G-Shock GBA800
645 Music
Access Sofie HR
 FitbitAltaRemove Buy NowFitbitFlex 2Remove Buy NowCasioG-Shock GBA800Remove Buy NowGarmin645 MusicRemove Buy NowMichael KorsAccess Sofie HRRemove Buy Now

Basic Info

Suggested Price$130$100$120$450$395
Release20162016201820182019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5 days5 days2 years7 days2 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/a
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolutionn/an/a240 x 240390 x 390
Sizen/an/a1.2 inches1.19 inches
Touchn/an/a
TypeOLEDLEDMIPOMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistancen/a5 ATM20 ATM5 ATM0.3 ATM

Notifications

Phone
Emailsn/a
Texts

Software

Operating Systemn/an/aWear OS
Apps
Music

All Wearables