Polar M600 vs. Polar V800 vs. Garmin 645 Music vs. Mobvoi TicWatch S2 vs. Xiaomi Mi Band 4

 
M600
V800
645 Music
TicWatch S2
Mi Band 4
 PolarM600Remove Buy NowPolarV800Remove Buy NowGarmin645 MusicRemove Buy NowMobvoiTicWatch S2Remove Buy NowXiaomiMi Band 4Remove Buy Now

Basic Info

Suggested Price$330$470$450$180$25
Release20162014201820192019

Activity & Fitness

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

Battery

Duration2 days13 hours to 30 days7 days2 DAYS20 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/an/a
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution240 x 240n/a240 x 240400 x 400120x240
Size1.3 inchesn/a1.2 inches1.39 inches0.95 inches
Touchn/a
TypeTFTn/aMIPOLEDAMOLED

Functions

Audio SpeakerAlerts onlyAlerts only
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceIPX83 ATM5 ATM5 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemAndroid Wearn/aWear OSAMAZFIT OS
Apps
Music

All Wearables