Amazfit GTR vs. Fitbit Versa 4 vs. Garmin Forerunner 255 vs. Garmin Vivoactive 5 vs. Polar A370 vs. Samsung Galaxy Watch vs. Samsung Galaxy Watch 4

	Amazfit GTR Check Amazon	Fitbit Versa 4 Check Amazon	Garmin Forerunner 255 Check Amazon	Garmin Vivoactive 5 Check Amazon	Polar A370 Check Amazon	Samsung Galaxy Watch Check Amazon	Samsung Galaxy Watch 4 Check Amazon
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Price and Release Date
Suggested Price	$179	$300	$400	$299	$179.95	$330	$250
Release / Update	2019	2022	2022	2023	2017	2018	2021
Activity & Fitness
Calories
Distance
Heart
VO2max (Oxygen)
Sleep
Steps
Stress mgt
Female health
Skin temp
Breath rate
Battery
Duration	24 days	6 days	14 days	Up to 11 days in smartwatch mode, 5 days with Always-on display, 21 days in battery saver mode, up to 21 hours in GPS mode	Up to 3 days	7 days	40 Hours
Rechargeable

Compatibility Support
Android
iOS
Windows Phone
Mac
Windows
Connectivity Support
Bluetooth
Cellular						Coming +$
GPS
NFC
Wi-Fi
Display
Color
Resolution	454 x 454	40,5x40,5	260x260	390 x 390 pixels	160 x 80	360 x 360	396 x 396
Size	1.39 inches	1,58 inches	1.3 inches	1.2"	1.18 inches	1.2" or 1.3"	1.9 inches
Touch
Type	AMOLED	AMOLED	AMOLED	AMOLED	TFT LCD	AMOLED	AMOLED
Functions
Audio Speaker
Clock
Phone
Vibration
Voice
Hardware
Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance	5 ATM	5 ATM (50 Meters)	5 ATM (50 Meters)	5 ATM (50 Meters)	WR30	5 ATM	5 ATM (50 Meters)
Notifications
Phone
Emails
Texts
Software
Operating System	Built-in	Fitbit OS	Built-in	Garmin Watch OS		Tizen OS	Wear OS 3
Apps
Music						Spotify
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