Fitbit Flex 2 Product Information and Latest Updates (2025)

Tab Tosser

Maker

Flex 2 is Fitbit’s ultra-slim, first-ever swim-proof fitness wristband features a removable tracker that transforms with classic bands, elegant bangles or pendants, allowing you to effortlessly track all-day activity, exercise and sleep in a style that’s all your own. - Now 30% smaller, Flex 2 features a removable tracker and interchangeable slim, classic fitness bands in seven colors that are perfect for every day, hitting the gym or going for a swim. - Smarter: A simple LED display uses color-coded lights to show progress toward your daily goal, and keeps you connected with call and text notifications. - Swim-proof and automatic swim tracking: As Fitbit’s first swim-proof wristband, Flex 2 is water resistant up to 50 meters, whether you’re in the shower, pool or ocean, and it automatically tracks your pool swims including laps, duration and calories burned in the Fitbit App. - Premium accessory options: Customize Flex 2 in a variety of Fitbit-designed bracelets and pendants to best suit your style or activity. Choose from a range of luxe, premium mirror-finish bangles in silver stainless steel, and 22k-plated gold or rose gold stainless steel or elegant lariat-style necklaces in silver stainless steel or 22k-plated gold stainless steel for an elevated look that fits seamlessly into your everyday life – from the office to a night out. - SmartTrack automatic exercise tracking recognizes select workouts (walks, runs, rides, elliptical, sports, aerobic workouts, and now swims). - Reminders to Move help you stay active with friendly reminders to reach mini hourly step goals and reduce stationary time.

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9yr ago

Fred Rivett

Brexit means Brexit

@jeremiahlee Hey Jeremiah, thanks for coming on PH for the launch today 👋 Really cool this one supports swimming, both from a resistance and tracking standpoint. I love that it tracks laps and duration. Will there be any breakdown on fastest laps, or stay more high level with just the total laps and overall duration?

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9yr ago

Jeremiah Lee

Tab Tosser

Maker

@fredrivett Flex 2 automatically tracks the duration of your swim and the number of pool lengths you complete. To track your pace and distance, you can enter the pool length in meters or yards into the Fitbit app before starting your swim. More information about the swim tracking is at https://help.fitbit.com/articles... .

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9yr ago

Jan Sapper

Fitbit hords your data and virtually kidnaps it, as they don't want to integrate with Apple Health Kit. A deal breaker here. Around 3300 votes for this in the Fitbit community and no answer since 2014. https://community.fitbit.com/t5/...

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9yr ago

Jeremiah Lee

Tab Tosser

Maker

@jan_sapper Fitbit does not sell user data and has no incentive to "hoard" your data. For perspective, Fitbit has more than 16 Million active users and only a few thousand have requested this feature. Fitbit offers free data export to CSV, Excel, and TCX formats, as well as a free Web API that's used to power many third-party integrations. Some of the best integrations—like Strava, IFTTT, and MyFitnessPal—are listed at https://www.fitbit.com/partnership .

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9yr ago

Ratoo Li ⌘

@jeremiahlee @jan_sapper But no HealthKit just plain turn a LOT of people away. Especially when $10~$20 bands/weighs from China supports it. It's getting harder to pursue people to invest in a ecosystem other than Apple/Google's. And I'm speaking this as a previous Ultra user.

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9yr ago

Jan Sapper

@jeremiahlee Let me re-post this: "Yeah, but neither does Apple's HealthKit sell my data. They remain on the device and allow me to exchange data between a variety of fitness/health-related devices. The argument that out of "16 million active users only a few thousand" have requested this feature doesn't hold up as you didn't actively ask all of those 16 millions. You have to change your perspective on that. Users have to have the intrinsic motivation to sign up and search your messy support forums to find the request a feature section. This obstacle will let you lose more than 99% of your user base. And honestly the fact that a few thousand request this very feature would bother me." I know data lock-in is awesome business for you, it's simply unacceptable as a data-driven user.

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9yr ago

Jeremiah Lee

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Maker

Fitbit has multiple free and enthusiastically supported ways for people to export their data. There is no "data lock-in", nor a business model that would motivate it. Fitbit prioritizes development of features by how most people will benefit from them. While the feature set satisfies millions of people worldwide, Fitbit accepts that it might not have every feature every person will want. I hope you find a product that helps you with your fitness goals, even if it's not made by Fitbit.

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8yr ago

Matthieu de Luze

Oh great 👌 I have the Fitbit Charge HR and it definitely is incomplete for me as it do not include swimming and is barely waterproof. Too bad if knew I would have wait for it 😼

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9yr ago

Jeremiah Lee

Tab Tosser

Maker

@matthieudeluze The Fitbit Charge HR has an altimeter for measuring elevation gain. This sensor requires direct access to air pressure, so it can't be fully waterproofed.

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9yr ago

Matthieu de Luze

@jeremiahlee Thanks for your answer 😸 Yes measuring elevation is a great feature though. Still I have it since late July 2016 and I wear it almost everyday. Only I'll have to change it to fully enjoy what Fitbit can provide but...it's good news 😹

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9yr ago

Zack Bloom

1 1 1 1

@jeremiahlee @matthieudeluze Would it make sense to have a sealed diaphragm which moves in response to the pressure changes? You could then sense the movement of the diaphragm from inside the sealed compartment. Or, for example, this sensor is waterproof to 100m: http://www.servoflo.com/pressure...

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9yr ago

Fitbit Flex 2

Fitness Tracker watches

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