Fitbit Charge HR vs. Garmin 645 Music vs. Garmin Vivofit 4 vs. Motorola Moto 360 Sport vs. Polar A370 vs. Polar M400 vs. Samsung Galaxy Watch 4 - Instant Comparison

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Fitbit Charge HR

Garmin 645 Music

Garmin Vivofit 4

Motorola Moto 360 Sport

Polar A370

Polar M400

Samsung Galaxy Watch 4

	Fitbit Charge HR Check Amazon	Garmin 645 Music Check Amazon	Garmin Vivofit 4 Check Amazon	Motorola Moto 360 Sport Check Amazon	Polar A370 Check Amazon	Polar M400 Check Amazon	Samsung Galaxy Watch 4 Check Amazon
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Price and Release Date
Suggested Price	$150	$450	$79.99	$299	$179.95	$200	$250
Release / Update	2015	2018	2018	2016	2017	2014	2021
Activity & Fitness
Calories
Distance
Heart
VO2max (Oxygen)
Sleep
Steps
Stress mgt
Female health
Skin temp
Breath rate
Battery
Duration	5 days	7 days	1 year		Up to 3 days	8 hours	40 Hours
Rechargeable

Compatibility Support
Android
iOS
Windows Phone
Mac				n/a
Windows				n/a
Connectivity Support
Bluetooth
Cellular
GPS
NFC
Wi-Fi
Display
Color
Resolution	n/a	240 x 240	88 x 88		160 x 80	128x128	396 x 396
Size		1.2 inches	NA	1.37 inches	1.18 inches		1.9 inches
Touch	n/a
Type	OLED	MIP	NA	LCD	TFT LCD	LCD	AMOLED
Functions
Audio Speaker						Alerts only
Clock
Phone
Vibration
Voice
Hardware
Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance	1 ATM	5 ATM	5 ATM		WR30	3 ATM	5 ATM (50 Meters)
Notifications
Phone
Emails
Texts
Software
Operating System	n/a			Android Wear 2			Wear OS 3
Apps
Music
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