Amazfit Bip vs. Amazfit Stratos vs. Apple Apple Watch Ultra 2 (II) vs. Garmin Vivosmart 4 vs. Misfit Speedo Shine vs. Misfit Vapor vs. Nokia (Withings) Pulse Ox vs. Polar M400

	Amazfit Bip Check Amazon	Amazfit Stratos Check Amazon	Apple Apple Watch Ultra 2 (II) Check Amazon	Garmin Vivosmart 4 Check Amazon	Misfit Speedo Shine Check Amazon	Misfit Vapor Check Amazon	Nokia (Withings) Pulse Ox Check Amazon	Polar M400 Check Amazon
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Price and Release Date
Suggested Price	$99.99	$199	$799	$130	$80	$199	$120	$200
Release / Update	2018	2018	2023	2018	2015	2017	2014	2014
Activity & Fitness
Calories
Distance
Heart			Third-generation optical heart sensor
VO2max (Oxygen)
Sleep
Steps
Stress mgt
Female health
Skin temp
Breath rate
Battery
Duration	30 days	5 days	Up to 36 hours normal use, Up to 72 hours in Low Power Mode	7 days	6 months		2 weeks	8 hours
Rechargeable

Compatibility Support
Android
iOS
Windows Phone
Mac					n/a		n/a
Windows					n/a		n/a
Connectivity Support
Bluetooth
Cellular
GPS						Connected GPS
NFC
Wi-Fi
Display
Color					n/a		blue
Resolution	176 x 176	320 x 300	502 x 410 pixels	48 x 128	n/a		128 x 32	128x128
Size	1.28 inches	1.34 inches	49mm	0.74 inches	n/a	1.39 inches
Touch					n/a		swipe
Type	NA	OLED	Always-On Retina LTPO OLED	OLED	n/a	AMOLED	OLED	LCD
Functions
Audio Speaker								Alerts only
Clock
Phone
Vibration
Voice
Hardware
Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance	IP68	5 ATM	Water resistance 100m, Dust resistance IP6X, EN13319 recreational scuba diving to 40m, Tested to MIL-STD 810H	5 ATM	5 ATM	5 ATM		3 ATM
Notifications
Phone
Emails
Texts
Software
Operating System		Propriertary	WatchOS 10		n/a	Android Wear 2	n/a
Apps
Music
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