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All Amazfit GTR vs. Fitbit Ace 3 vs. Fitbit Sense 2 vs. Fitbit Versa 4 vs. Garmin 645 Music vs. Garmin Bounce vs. Garmin Fenix 7 vs. Garmin Vivoactive 5 vs. Garmin Vivoactive HR vs. Garmin Vivofit 4 vs. Garmin Vivosmart 4 vs. Polar A370 vs. Polar Ignite 2 vs. Polar Loop 2
Amazfit GTR Fitbit Ace 3 Fitbit Sense 2 Fitbit Versa 4 Garmin 645 Music Garmin Bounce Garmin Fenix 7 Garmin Vivoactive 5 Garmin Vivoactive HR Garmin Vivofit 4 Garmin Vivosmart 4 Polar A370 Polar Ignite 2 Polar Loop 2

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Price and Release Date

Suggested Price$179$130$300$300$450$150$699$299$250$79.99$130$179.95$229$120
Release / Update20192021202220222018202220222023201620182018201720212015

Activity & Fitness

Calories
Distance
Heart$
VO2max (Oxygen)
Sleep
Steps
Stress mgt
Female health
Skin temp
Breath rate

Battery

Duration24 days8 Days6 days6 days7 days2 days9 DaysUp to 11 days in smartwatch mode, 5 days with Always-on display, 21 days in battery saver mode, up to 21 hours in GPS mode13 hours to 8 days1 year7 daysUp to 3 days5 Days8 days (without notifications)
Rechargeable

Compatibility Support

Android
iOS
Windows Phone
Macn/an/a
WindowsYes n/an/a

Connectivity Support

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution454 x 454240 x 240336x33640,5x40,5 240 x 240240 x 240 pixels240 x 240390 x 390 pixels148 x 20588 x 8848 x 128160 x 80240 x 240
Size1.39 inches1.47 inches1,59 inches1,58 inches1.2 inches1.3 inches1.2 inches1.2"1.38 inchesNA0.74 inches1.18 inches1.6 inches
Touch
TypeAMOLEDPMOLEDAMOLEDAMOLEDMIPMIP LCDAMOLEDNAOLEDTFT LCDLCDLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATM5 ATM5 ATM (50 Meters)5 ATM (50 Meters)5 ATM5 ATM (50 Meters)10 ATM (100 Meters)5 ATM (50 Meters)5 ATM5 ATM5 ATMWR303 ATM2 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemBuilt-inBuilt-inFitbit OSFitbit OSBuilt-inGarmin Watch OSGarmin Watch OSBuilt-inn/a
Apps
Music

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