Fitbit Alta vs. Fitbit Flex 2 vs. Diesel On Full Guard vs. Garmin 645 Music vs. Apple Series 6

 
Alta
Flex 2
On Full Guard
645 Music
Series 6
 FitbitAltaRemove Buy NowFitbitFlex 2Remove Buy NowDieselOn Full GuardRemove Buy NowGarmin645 MusicRemove Buy NowAppleSeries 6Remove Buy Now

Basic Info

Suggested Price$130$100$325$450$399
Release20162016201720182020

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5 days5 days1 day7 daysNot yet
Rechargeable

Compatibility

Android
iOS
Windows Phonen/a
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolutionn/an/a454 x 454240 x 240384 x 480
Sizen/an/a1.4 inches1.2 inches40mm
Touchn/an/a
TypeOLEDLEDOMOLEDMIPMicroLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor5 ATM
Water Resistancen/a5 ATMIP675 ATM

Notifications

Phone
Emailsn/a
Texts

Software

Operating Systemn/an/aAndroid Wear 2.0WatchOS 5
Apps
Music

All Wearables