Garmin 645 Music vs. Garmin Instinct Solar 2 vs. Garmin Vivosmart 4 vs. Jawbone UP Move vs. Nokia (Withings) Steel HR vs. Samsung Gear Fit2 Pro vs. Sony SmartBand 2

	Garmin 645 Music Check Amazon	Garmin Instinct Solar 2 Check Amazon	Garmin Vivosmart 4 Check Amazon	Jawbone UP Move Check Amazon	Nokia (Withings) Steel HR Check Amazon	Samsung Gear Fit2 Pro Check Amazon	Sony SmartBand 2 Check Amazon
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Price and Release Date
Suggested Price	$450	$300	$130	$50	$180	$199.99	$130
Release / Update	2018	2023	2018	2014	2016	2017	2015
Activity & Fitness
Calories
Distance
Heart
VO2max (Oxygen)
Sleep
Steps
Stress mgt
Female health
Skin temp
Breath rate
Battery
Duration	7 days	Up to 28 days (45mm) / 21 days (40mm), unlimited with solar	7 days	6 months	25 days	2 days	2 days
Rechargeable

Compatibility Support
Android
iOS
Windows Phone
Mac				n/a	n/a		n/a
Windows				n/a	n/a		n/a
Connectivity Support
Bluetooth
Cellular
GPS
NFC
Wi-Fi
Display
Color				n/a			n/a
Resolution	240 x 240	176 x 176 pixels (45mm), 156 x 156 pixels (40mm)	48 x 128	n/a		216 x 432	n/a
Size	1.2 inches	0.9” x 0.9” (45mm), 0.79” x 0.79” (40mm)	0.74 inches	n/a		1.5	n/a
Touch				n/a			n/a
Type	MIP	MIP	OLED	n/a		AMOLED	n/a
Functions
Audio Speaker
Clock
Phone
Vibration
Voice
Hardware
Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance	5 ATM	10 ATM (100 Meters)	5 ATM	Splash resistant	5 ATM	5 ATM	IP58
Notifications
Phone
Emails
Texts
Software
Operating System		Garmin Watch OS		n/a	n/a	Tizen OS	n/a
Apps
Music
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