heart rate including afib will report to an Iphone 12?

FitBit Sense 2 works with iPhone that has an operating system of OS 14. I have an iPhone 7 with an OS 15 and it works just fine. Hope this helps.

Why did the price change back to full price yesterday from $79.95 when I attempted to purchase two of these items?

It was a "DOORBUSTER" for black Friday/cyber Monday The price was SIGNIFICANTLY below even wholesale price. Prices of retail products fluctuate EVERY DAY, even SEVERAL TIMES A DAY. This could either be the retailer OR it could be Amazon OR could be the product company. In the case of the super sale on the FitBit Sense 2, the sale was ONE PER CUSTOMER and ONE PER ADDRESS. I know, I tried to do the same. (I did get one). The idea was cooperative with Amazon the retailer as part of the black Friday/cyber Monday sale AND Google (FitBit) helped absorb most of the price. They were trying to increase their customer base and the Sense2 was a promotion in order to try to hook users on to a subscription model of profit raising. They just don't want a 200 dollar sale, they want to get you to pay 80-120 a year. Like ALL products, whether it be a piece of software, or a peloton, there are upfront costs AND back end costs. Even though you and I were trying to buy gifts, there were other people doing what is called "retail arbitrage"> There were independent retailers that thought they could buy a 65 inch TV, a 50 inch TV, a Fitbit, all below wholesale price, and then re-sell it

Is it water resistant?

Depends on what kind of water resistance. I shower with it and no problems but the screen keeps waking up and it seems like water triggers it to push some buttons on the screen... I think this can survive a swimming pool too

Which features are premium only?

Daily readiness score, a breakdown of stress management score, health metrics trends for past 90 days, wellness report, advanced skin temp. Details, over 200 workouts and mindfulness sessions, a breakdown of sleep score and, blood glucose trend which you need a comparable glucose meter and Bluetooth .

Fitbit Sense 2 Advanced Health And Fitness Smartwatch Blue Mist

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Description

⌚ Elevate your health game with Fitbit Sense 2 — where wellness meets smart style.

MOVE WITH CONFIDENCE - 40+ exercise modes, automatic workout tracking, and Active Zone Minutes fuel your fitness journey.
STRESS LESS LIVE MORE - All-day stress detection with cEDA & daily Stress Management Score keeps your mental wellness in check.
POWER THROUGH YOUR WEEK - Up to 6+ days battery life with rapid 12-minute charge for 24 hours of use—never miss a beat.
STAY CONNECTED HANDS FREE - On-wrist Bluetooth calls, texts, notifications, plus Alexa built-in for seamless multitasking.
SLEEP SMARTER WAKE REFRESHED - Track daily sleep stages, Sleep Score, and enjoy a smart wake alarm for optimized rest.

The Fitbit Sense 2 is an advanced health and fitness smartwatch designed for adults seeking comprehensive wellness tracking. Featuring all-day stress detection, ECG for heart rhythm assessment, SpO2 monitoring, and a Health Metrics dashboard, it empowers users to manage stress, improve sleep quality, and enhance physical activity. With built-in GPS, 40+ exercise modes, water resistance up to 50 meters, and smart connectivity including Bluetooth calls and Alexa integration, it supports an active, connected lifestyle. The device offers a vibrant 1.58-inch AMOLED display, 6+ day battery life, and compatibility with iOS and Android devices.

Specifications

ASIN	B0B4MV1TGL
ASIN	B0B4MV1TGL
Additional Features	Sleep Monitor, Stress Monitor, Sleep Monitor, ECG, Oxymeter (SpO2), Heart Rate Monitor, GPS, Time Display, Notifications, Water Resistant
Age Range Description	Adult
Band Color	Blue
Band Length	40.5 millimeters
Band Material Type	Silicone
Batteries	1 Lithium Ion batteries required. (included)
Battery Average Life	6 days
Battery Capacity	162
Battery Cell Type	Lithium Ion
Battery Charge Time	12 minutes
Best Sellers Rank	#1,335 in Electronics ( See Top 100 in Electronics ) #31 in Smartwatches
Brand	Fitbit
Built-In Media	Watch Band
Case Material Type	Aluminum
Color	Blue Mist/Pale Gold
Communication Feature	Bluetooth Call,Message, Notifications
Compatible Devices	Smartphone
Compatible Phone Models	Apple iOS 16.4 or higher & Android OS 11.0 or higher
Connectivity Technology	Bluetooth
Controller Type	Android
Customer Reviews	4.1 4.1 out of 5 stars (10,249)
Date First Available	September 23, 2022
Department	mens
Display Type	AMOLED or OLED
GPS Geotagging Functionality	Built-in GPS
Human Interface Input	Touchscreen
Item Dimensions	1.57 x 0.47 x 1.57 inches
Item Dimensions D x W x H	0.47"D x 0.47"W x 1.57"H
Item Weight	1.3 ounces
Item model number	FB521GLBM-US
Manufacturer	Fitbit Inc
Manufacturer	Fitbit Inc
Memory Storage Capacity	4 GB
Metrics Measured	Stress,Heart Rate,Body Temperature,Sleep,SPo2
Model Name	Fitbit Sense 2
Model Number	FB521GLBM-US
Operating System	Android
Product Dimensions	1.57 x 0.47 x 1.57 inches; 1.3 ounces
Resolution	348 x 348
Screen Size	1.58 inches
Shape	Square
Sim Card Size	eSIM
Sport Type	Fitness
Style Name	Modern
Supported Application	GPS, Phone
Supported Satellite Navigation System	GPS
Target Audience	Unisex Adults
UPC	810073611436
Unit Count	1 Count
Warranty Description	1 year manufacturer
Warranty Type	Limited
Water Resistance Depth	50 meters
Water Resistance Level	Water Resistant
Waterproof Rating	[IPX4 or better]
Wearable Computer Type	Smart Watch
Wireless Compability	Bluetooth
Wireless Provider	Unlocked

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Fitbit Sense 2 Advanced Health and Fitness Smartwatch - Blue Mist/Pale Gold

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Description

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