Image of a Watch Series 3
Image of a V800
Image of a 645 Music
Image of a Alta HR
 AppleWatch Series 3Remove Buy NowPolarV800Remove Buy NowGarmin645 MusicRemove Buy NowFitbitAlta HRRemove Buy Now

Basic Info

Suggested Price$329$470$450$150
Release2017201420182017

Activity & Fitness

Calories
Cycling (Bicycling)n/a
Distance
Heartn/a
Oxygen
Sleep
Steps
Swim

Battery

Duration18 hours13 hours to 30 days7 days7 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/a
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution340 x 272 or 390 x 312n/a240 x 240128 x 36
Size1.5 inches or 1.65 inchesn/a1.2 inches1.4 inches
Touch
TypeAMOLEDn/aMIPOLED

Functions

Audio SpeakerAlerts only
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATM3 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemWatchOS 4n/a
Apps
Music

All Wearables