Polar M400 vs. Fitbit Alta vs. Amazfit Bip vs. Casio G-Shock GBA800 vs. Garmin 645 Music

 
M400
Alta
Bip
G-Shock GBA800
645 Music
 PolarM400Remove Buy NowFitbitAltaRemove Buy NowAmazfitBipRemove Buy NowCasioG-Shock GBA800Remove Buy NowGarmin645 MusicRemove Buy Now

Basic Info

Suggested Price$200$130$99.99$120$450
Release20142016201820182018

Activity & Fitness

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

Battery

Duration8 hours to 30 days5 days30 days2 years7 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/a
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/an/a176 x 176240 x 240
Sizen/an/a1.28 inches1.2 inches
Touchn/a
Typen/aOLEDNAMIP

Functions

Audio SpeakerAlerts only
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance3 ATMn/aIP6820 ATM5 ATM

Notifications

Phone
Emailsn/a
Texts

Software

Operating Systemn/an/a
Apps
Music

All Wearables