Fitbit Alta vs. Apple Watch Series 2 vs. Garmin 645 Music vs. Apple Series 6 vs. Fitbit Sense 2

 
Alta
Watch Series 2
645 Music
Series 6
Sense 2
 FitbitAltaRemove Buy NowAppleWatch Series 2Remove Buy NowGarmin645 MusicRemove Buy NowAppleSeries 6Remove Buy NowFitbitSense 2Remove Buy Now

Basic Info

Suggested Price$130$269$450$399$300
Release20162016201820202022

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5 days18 hours7 daysNot yet6 days
Rechargeable

Compatibility

Android
iOS
Windows Phone
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/a340 x 272 or 390 x 312240 x 240384 x 480336x336
Sizen/a1.5 inches or 1.65 inches1.2 inches40mm1.59 inches
Touchn/a
TypeOLEDAMOLEDMIPMicroLEDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor5 ATM
Water Resistancen/a5ATM5 ATM5 ATM

Notifications

Phone
Emailsn/a
Texts

Software

Operating Systemn/aWatch OSWatchOS 5
Apps
Music

All Wearables