Engineering:List of Fitbit products

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This is a list of products released by Fitbit.

Products

Trackers

Fitbit Charge 3 displaying time, heart rate, and steps

Activity tracker products.

Fitbit Ace range

Released in March 2009, the Fitbit Ace is a version of the Alta for children aged 8 and above. In March 2019, the Fitbit Ace 2 for kids aged 6 and above was released.[1][2]

Fitbit Charge 5

The Fitbit Charge 5 is a tracker released in September 2021.[3]

Fitbit Luxe

Fitbit Luxe is a fitness tracker released on 30 April 2021.[4]

Fitbit Inspire 3

Announced in August 2022, the Fitbit Inspire 3 was released on September 15, 2022.[5]

Fitbit Charge 6

The Fitbit Charge 6 is a tracker released in September 2023.[6]

Smartwatches

Fitbit Versa 2

The Fitbit Versa 2 was released in September 2019.[7]

Fitbit Versa 3

The Fitbit Versa 3 was announced in August 2020[8] and released at the end of September 2020.

Fitbit Sense

The Fitbit Sense was released at the end of September 2020.[9] The Sense received FDA-approval for its electrocardiogram function. This function was available in select regions only at launch.[10] This model features stress tracking, as well as blood oxygen measurements. Similar to the Fitbit Versa 3, this Fitbit also removes the ability to store music on the device, as available in the Fitbit Versa 2.

Fitbit Versa 4

The Fitbit Versa 4 was released on September 23, 2022.[11]

Fitbit Sense 2

The Fitbit Sense 2 was released on September 23, 2022.[12]

Smart scales

Fitbit Aria Air

The Fitbit Aria Air smart scale was released in 2019.[13]

Discontinued products

Clip-on trackers

Fit

The Fit Tracker was a small black and teal device that could be clipped discing and worn 24/7. It uses a three-dimensional accelerometer to sense user movement. The Tracker measures steps taken as well as user data to calculate distance walked, calories burned, floors climbed, and activity duration and intensity. It uses an OLED display to display this and other information such as the battery level. It also measures sleep quality by tracking periods of restlessness, how long it takes the wearer to fall asleep and how long they are actually asleep.[14]

A wireless base station is included to receive data from the Tracker and to charge its battery. When connected to a computer, the base station will upload data to the Fitbit website, where a number of features are available: seeing an overview of physical activity, setting and tracking goals, keeping food and activity logs and interacting with friends. Use of the website is free.

The Fitbit Classic tracked only steps taken, distance travelled, calories burned, activity intensity and sleep.

At the TechCrunch50 during the "Mobile" session on September 9, 2008,[15] Fitbit received positive reactions during its panel from experts like Rafe Needleman, Tim O'Reilly, and Evan Williams who cited its wearability, price, and lack of subscription fees.

Fitbit Ultra

Fitbit Ultra activity tracker in teal clipped to pocket

The Fitbit Ultra was announced on October 3, 2011.[16] The new features included:

  • an altimeter that measures elevation gain in terms of floors, with one floor roughly equivalent to ten feet
  • a digital clock visible on the device's display
  • a stopwatch that can be used to time activities
  • randomized "Chatter" messages show when the Ultra is moved after sitting idle for a while
  • new colors

The Fitbit Ultra is powered by a small lithium polymer battery.[17]

The Fitbit Ultra suffered from a small design flaw: the unit had a permanently curved shape in order to clip directly onto any piece of clothing. The plastic used in the unit was inappropriate for the strain experienced at the looped end, and with time would become brittle, and crack. While most users experienced only minor cracking with no effects on the device's function, in a few cases the cracking led to total failure.[18][19][20] Fitbit offered replacement or repair of affected units that were under warranty.

Fitbit One

Announced on September 17, 2012, the Fitbit One is an update to the Fitbit Ultra that has a more vivid digital display, a separate clip and a separate charging cable and wireless sync dongle.[21] The Fitbit One and the Fitbit Zip were the first wireless activity trackers to sync using Bluetooth 4.0 or Bluetooth Low Energy technology. Wireless syncing is currently available on iOS and Android devices such as the iPhone 4S and higher, iPad 3rd generation, iPod touch 5th generation, Samsung Galaxy Note II and higher, Samsung Galaxy S III and higher, LG G2, HTC One, Moto X, and Nexus 4 or higher.[22] Fitbit One can record several daily activities, including but not limited to, the number of steps taken, distance travelled on foot, the number of floors climbed, calories burned, vigorously active minutes, and sleep efficiency.

Fitbit Zip

A white Fitbit Zip, showing the distance in miles covered by the wearer

Announced on September 17, 2012, the Fitbit Zip is about the size of a United States quarter and tracks steps taken, distance travelled and calories burned. It is able to sync its data wirelessly to supported mobile devices.[22] Notably, it showed faces based on how much activity the wearer was showing.[23] If the wearer had little to no activity, it would show a frown, but if they had sufficient activity, it would show a smiley face.

The Fitbit Zip was discontinued and replaced with the Fitbit Inspire clip accessory in March 2019.

Wristband trackers

Fitbit Flex with accompanying wristband

Fitbit Flex

In May 2013, Fitbit released the Fitbit Flex, the first Fitbit tracker worn on the wrist. It tracks movement 24 hours a day, including sleep patterns. It has a simple display of 5 LED lights that indicate the progress toward the goal number of steps walked in a day and vibrates to indicate when the goal has been reached. The sync functions are similar to the Fitbit One and Zip. The Flex is a water-resistant tracker, though unlike its successor the Flex 2, cannot be worn while swimming.[24] It includes a specialized USB charger; the battery lasts 5–7 days, and it takes 1–2 hours to charge.

Fitbit Flex 2

Released in 2016. It is waterproof and can track swimming. The tracker can be worn in a wristband or pendant or carried in a pocket. The LED lights function similarly to the original Flex, with the number of illuminated dots indicating progress toward the set goal. It features "reminder to move" alerts and vibrations when a call or text is received.

Fitbit Force

The Fitbit Force was announced on October 10, 2013. It has an OLED display[25] that shows time and daily activity. The Force tracks the number of statistics in real-time, including steps taken, distance travelled, calories burned, stairs climbed and active minutes throughout the day. At night, the Force tracks sleep and can wake a user silently with a vibrating alarm.

On January 13, 2014, it was reported that an unconfirmed number of Fitbit customers had complained about skin irritation after wearing the Force for extended periods of time.[26] Fitbit stated on its website that the company consulted with medical professionals whose assessments are that these irritations are most likely allergic reactions to nickel, a component of the surgical-grade steel or the adhesives used to assemble the Fitbit Force.[27] Fitbit, working with the Consumer Protection Safety Commission, recalled the Fitbit Force on February 20, 2014.[27] On March 12, 2014 the Consumer Product Safety Commission (CPSC) made the recall official.[28] At that time it was revealed that The Fitbit Force had caused about 9,900 injuries.[28] It is no longer for sale on Fitbit's website.

Fitbit Charge

Fitbit Charge HR

Announced in October 2014, the Fitbit Charge is intended as a replacement for the recalled Fitbit Force. It was released in November 2014 for US$130 retail. The Charge's wristband is textured. The Charge automatically tracks users' steps, sleep, flights of stairs, and an approximation of the distance travelled. It tracks steps using a 3-axis accelerometer by tracking forward movement along with upward movements.[29][30]

Fitbit Charge HR

Announced in October 2014 and released in early January 2015, the Charge HR is similar to the Charge, with an additional heart-rate monitor. With this addition, the 7-day battery life is reduced to 5 days. The Charge HR has the same textured band as the Charge and comes in black, plum, blue, tangerine, pink, and teal colors. The Charge HR band clasp resembles that of a traditional watch instead of the snap-on band of the original Charge, as the band needs to fit tightly for the heart rate feature.[31][32][33]

Fitbit Charge 3

The Fitbit Charge 3 was released in October 2018. It has a heart rate sensor as well as an oxygen saturation (SPO2) sensor - however, it shipped non-functional but Fitbit eventually enabled the feature.[34] Sleep tracking has been improved from the Charge 2.[35] In November 2018, a special edition of the Fitbit Charge 3 was released featuring "Fitbit Pay" as a special feature.

Fitbit Charge 4

The Fitbit Charge 4 is a tracker released in March 2020.[36] It shares the same form factor as the Charge 3, but includes additional features such as in-built Spotify controls, Active Zone Minutes[37] and Fitbit Pay Support. Charge 4 also has built in GPS, and many of the Charge 3 clock faces return.[38][promotional language]

Fitbit Alta

Fitbit Alta HR fitness tracker wristband showing heart rate monitor display

The Fitbit Alta[39] was released in February 2016. The wristband offers a full OLED screen that can be tapped for reminders, a clock and smartphone notifications. While not a touch screen, it is interacted with by tapping the band, similar to previous models. The Alta is also able to recognize the type of activity in progress: running, football, or walking.

Smartwatches

Fitbit Surge

Fitbit Surge

Announced in October 2014, the Surge was a smart watch and an activity tracker. It features a heart-rate monitor and the ability to track pace, distance, and elevation using the GPS on the device. The Surge also can send alerts of text and incoming calls from a connected smartphone.

The Surge was discontinued in late 2017 and was replaced by the Ionic.

Fitbit Blaze

Fitbit Blaze

Released in January 2016[40] the Fitbit Blaze is a smartwatch made to compete with the Apple Watch, Pebble, and Android Wear. The Blaze comes with a coloured touchscreen, and an exchangeable strap and frame. It can auto-track exercises and has a heart-rate monitor. Blaze has connected GPS,[41] meaning it tracks location using the connected smartphone's GPS. It can display notifications, including incoming calls, texts and calendar appointments.[42] The Blaze introduces the Sleep Stages feature.

The Fitbit Blaze also integrates with Fitstar, Fitbit's website for customized workouts. These workouts can be displayed on the Blaze's screen.[43]

The Blaze was discontinued in early 2018 and was replaced by the Versa.

Fitbit Ionic

Fitbit Ionic in Slate Blue & Burnt Orange
The Fitbit Ionic in workout mode
Fitbit Ionic

The Fitbit Ionic[44] was released in late September 2017. Designed to compete with the Apple Watch Series 3, it is the successor to both the Blaze and the Surge. Like the Surge, the Ionic uses built-in GPS, using GLONASS to tap into global satellites and provide better accuracy when recording exercises, with the antenna being integrated into the watch case for a stronger connection. The Ionic also features SmartTrack, which auto-recognizes user activity and records it in the Fitbit app. The Ionic has interchangeable bands, including classic Fitbit bands, leather bands, and perforated bands for a more sport-like appearance, and the release mechanism has been modified to make swapping out bands easier. It is also water-resistant, making it safe to wear when swimming. Many of the Blaze's clock faces return, as do several new clock faces. New to the Ionic is the ability to load apps onto the watch itself such as AccuWeather and Starbucks, as well as an NFC chip that allows the Ionic to be used for credit card purchases at places that allow contactless payment. As a result, the tactile buttons on the Ionic have some new functions. When not in workout mode, the right side buttons now function as shortcuts for the leftmost two apps loaded onto the watch, while a long press on the left side button brings up Fitbit Pay as well as music and quick settings. The Ionic is shipped in three color combinations of the wristband and watch case: Charcoal & Smoke Gray, Slate Blue & Burnt Orange, and Blue Gray & Silver Gray.

In 2018, the Ionic was updated to Fitbit OS 2.0 alongside the release of the Versa. The most notable change from OS 1.0 is the addition of a new app called Fitbit Today, a dashboard displaying the user's health and fitness data. In July 2018, Fitbit announced the 15+ Best Fitbit OS Apps for Travel, which can be downloaded in Ionic and some are also available in Versa.

On March 2, 2022, Fitbit announced a recall for the Ionic units due to a burn hazard risk.[45]

Fitbit Versa

Released in April 2018, it has a square design with round edges, similar to the Apple Watch and Pebble watches. It retains most of the Ionic's features and interface. It is capable of tracking women's menstrual cycles. It does not have built-in GPS like the Ionic, instead using connected GPS like the Blaze.[46]

There are three variants of the Versa; the standard edition, the Special Edition, and the Lite Edition. The standard Versa comes in three colors: black, rose gold, or silver. The Special Edition comes in rose gold with a lavender band, or graphite with a charcoal band. The Special Edition also includes woven wristbands. In the United States, the Special Edition of the Versa is the only version of the watch to ship with Fitbit Pay. The Lite Edition has a more limited feature set and comes in silver with a white or lilac band, marina blue, or mulberry.[47]

Smart scales

Fitbit Aria 2 in black
Discontinued Aria in white
Fitbit Aria scales

Fitbit Aria

In April 2012,[48] Fitbit released a weighing scale called the Fitbit Aria. It recognizes users and measures weight, body mass index (BMI) and percentage of body fat of the user. It can keep track of eight individual users and updates information to fitbit.com automatically via Wi-Fi network.[49] The information is also updated to smartphone apps.

Wireless headphones

Fitbit Flyer

Sweatproof wireless earphones by Fitbit. Has noise isolation.[50]

Fitness tracker comparison

Model Type Released Steps Floors Heart rate Oxygen [51] Skin Temp[52] Sleep Sleep stages Clock Swim GPS Stress Tracking ECG[10] Fitbit OS Water resistance Battery life AOD Customizable
appearance
Classic Clip 2009 Yes No No No No Yes No No No No No No No Resistant 7 days No No
Ultra Clip 2011 Yes Yes No No No Yes No Yes No No No No No Resistant 7 days No No
One Clip 2012 Yes Yes No No No Yes No Yes No No No No No Resistant 10–14 days No Yes
Zip Clip 2012 Yes No No No No No No Yes No No No No No Resistant 4–6 months No Yes
Flex Wristband 2013 Yes No No No No Yes No No No No No No No Resistant 5 days No Yes
Force Wristband 2013 Yes Yes No No No Yes No Yes No No No No No Resistant 7–10 days No No
Charge Wristband 2014 Yes Yes No No No Yes No Yes No No No No No Resistant 7–10 days No No
Charge HR Wristband 2015 Yes Yes Yes No No Yes No Yes No No No No No Resistant 5 days No Yes
Surge Smart watch 2015 Yes Yes Yes No No Yes No Yes No Built-in GPS No No No Resistant 7 days No No
Blaze Smart watch 2016 Yes Yes Yes No No Yes Yes Yes No Uses smartphone's GPS No No No Resistant 5 days No Yes
Alta Wristband 2016 Yes No No No No Yes No Yes No No No No No Resistant 5 days No Yes
Charge 2 Wristband 2016 Yes Yes Yes No No Yes Yes Yes No Uses smartphone's GPS No No No Resistant 5 days No Yes
Flex 2 Wristband 2017 Yes No No No No Yes Yes No Yes No No No No Waterproof, 50 m (160 ft) 5 days No Yes
Alta HR Wristband 2017 Yes No Yes No No Yes Yes Yes No No No No No Resistant 7 days No Yes
Ionic Smart watch 2017 Yes Yes Yes Yes Maybe Yes Yes Yes Yes Built-in GPS No No Yes Waterproof, 50 m (160 ft) 5 days No Yes
Versa Smart watch 2018 Yes Yes Yes Yes Maybe Yes Yes Yes Yes Uses smartphone's GPS No No Yes Waterproof, 50 m (160 ft) 4 days No Yes
Ace Wristband 2018 Yes Yes No No No Yes No Yes No Uses smartphone's GPS No No No Resistant 5 days No Yes
Charge 3 Wristband 2018 Yes Yes Yes Yes No Yes Yes Yes Yes Uses smartphone's GPS No No No Waterproof, 50 m (160 ft) 7 days No Yes
Inspire Wristband 2019 Yes No No No No Yes No Yes Yes Uses smartphone's GPS No No No Waterproof, 50 m (160 ft) 5 days No Yes
Inspire HR Wristband 2019 Yes No Yes No No Yes Yes Yes Yes Uses smartphone's GPS No No No Waterproof, 50 m (160 ft) 5 days No Yes
Ace 2 Wristband 2019 Yes No No No No Yes Yes Yes No Uses smartphone's GPS No No No Waterproof, 50 m (160 ft) 5 days No Yes
Versa 2 Smart watch 2019 Yes Yes Yes Yes Maybe Yes Yes Yes Yes Uses smartphone's GPS No No Yes Waterproof, 50 m (160 ft) 4 days No Yes
Versa Lite Edition Smart watch 2019 Yes No Yes Yes Maybe Yes Yes Yes Yes Uses smartphone's GPS No No Yes Waterproof, 50 m (160 ft) 4 days No Yes
Charge 4 Wristband 2020 Yes Yes Yes Yes Maybe Yes Yes Yes Yes Built-in and smartphone GPS No No Yes Waterproof, 50 m (160 ft) 3 hours (GPS)
7 days (advertised) 		No Yes
Versa 3 Smart watch 2020 Yes Yes Yes Yes Maybe Yes Yes Yes Yes Built-in and smartphone GPS No No Yes Waterproof, 50 m (160 ft) TBD (GPS)
6 days (advertised)
Fast charge one extra day in 12 minutes 		Yes Yes
Sense Smart watch 2020 Yes Yes Yes Yes Yes Yes Yes Yes Yes Built-in and smartphone GPS Yes Yes Yes Waterproof, 50 m (160 ft) TBD (GPS)
6+ days (advertised)
Fast charge one extra day in 12 minutes
Full charge in 1–2 hours (manufacturer's claim) 		Yes Yes
Inspire 2 Wristband or clip 2020 Yes No Yes No Maybe Yes Yes Yes Yes Uses smartphone's GPS No No Yes Waterproof, 50 m (160 ft) 10 days No Yes
Ace 3 Wristband 2021 Yes No No No No Yes Yes Yes No Uses smartphone's GPS No No No Waterproof, 50 m (160 ft) 8 days No Yes
Luxe Wristband 2021 Yes No Yes Yes Maybe Yes Yes Yes Yes Uses smartphone's GPS No No Yes Waterproof, 50 m (160 ft) 5 days Yes Yes
Charge 5[53] Wristband 2021 Yes No Yes Yes Maybe Yes Yes Yes Yes Built-in and smartphone GPS Yes Yes Yes Waterproof, 50 m (160 ft) 7 days Yes Yes
Inspire 3 Wristband or clip 2022 Yes No Yes Yes Maybe Yes Yes Yes Yes Uses smartphone's GPS Yes No Yes Waterproof, 50 m (160 ft) 10 days Yes Yes
Versa 4 Smart watch 2022 Yes Yes Yes Yes Maybe Yes Yes Yes Yes Built-in and smartphone GPS Yes No Yes Waterproof, 50 m (160 ft) TBD (GPS)
6 days (advertised)
Fast charge one extra day in 12 minutes 		Yes Yes
Sense 2 Smart watch 2022 Yes Yes Yes Yes Yes Yes Yes Yes Yes Built-in and smartphone GPS Yes Yes Yes Waterproof, 50 m (160 ft) TBD (GPS)
6+ days (advertised)
Fast charge one extra day in 12 minutes
Full charge in 1–2 hours (manufacturer's claim) 		Yes Yes
Charge 6 Wristband 2023 Yes No Yes Yes Maybe Yes Yes Yes Yes Built-in and smartphone GPS Yes Yes Yes Waterproof, 50 m (160 ft) TBD (GPS)
6+ days 		Yes Yes

Features of other products

Model Type Released Tracks Connectivity Battery life
Aria Scale 2012 Weight, body fat %, BMI[54] Wi-Fi 6 months
Flyer Earbuds 2017 N/A Bluetooth 4.2 6 hours
Aria 2 Scale 2017 Weight, body fat %, BMI Wi-Fi 1 year
Aria Air Scale 2019 Weight, BMI Bluetooth 4.0 3AAA 1.5V batteries

References

  1. ↑ "Fitbit Ace™ Kids Wristband" (in en-US). https://www.fitbit.com/ace. 
  2. ↑ Bonifacic, Igor (13 March 2018). "Ace is Fitbit's new kid-focused fitness tracker". MobileSyrup. https://mobilesyrup.com/2018/03/13/fitbit-ace-tracker/. 
  3. ↑ "Fitbit Charge 5: Price and Features - Tech News Central" (in en-US). 31 August 2021. https://technewscentral.com/fitbit-charge-5-price-and-features/. 
  4. ↑ Henschel, Haley (30 April 2021). "Here's where the $149 Luxe can be pre-ordered, Fitbit's most attractive fitness tracker to date" (in en). https://mashable.com/shopping/april-30-fitbit-luxe-preorder/. 
  5. ↑ https://www.fitbit.com/global/us/products/trackers/inspire3
  6. ↑ Cipriani, Jason (September 28, 2023). "The $160 Fitbit Charge 6 is a smarter, cheaper fitness watch — and you can preorder it now". CNN Underscored. https://www.cnn.com/cnn-underscored/electronics/fitbit-charge-6. 
  7. ↑ "Fitbit Versa 2™ Smartwatch". https://www.fitbit.com/en-ca/shop/versa. 
  8. ↑ Kozuch, Kate (2020-08-25). "Fitbit Versa 3 release date, price, features and news". https://www.tomsguide.com/news/fitbit-versa-3-unveiled-price-release-date-and-how-to-pre-order. 
  9. ↑ Savvides, Lexy & Stein, Scott (2020-09-30). "Fitbit Sense review: An ambitious smartwatch that takes on too much". https://www.cnet.com/news/fitbit-sense-review-an-ambitious-smartwatch-that-takes-on-too-much/. 
  10. ↑ 10.0 10.1 Lamont, Jonathan (2020-09-16). "Fitbit Sense ECG feature to be available in select regions at launch, but not Canada". https://mobilesyrup.com/2020/09/16/fitbit-sense-ecg-feature-available-launch-not-canada/. 
  11. ↑ https://www.fitbit.com/global/us/products/smartwatches/versa4?sku=523BKBK
  12. ↑ https://www.fitbit.com/global/us/products/smartwatches/sense2?sku=521BKGB
  13. ↑ May 2021, Cat Ellis 30 (30 May 2021). "Fitbit Aria Air review" (in en). https://www.techradar.com/uk/reviews/fitbit-aria-air. 
  14. ↑ Ewalt, David M. (June 11, 2010). "Getting Fitbit". Forbes. https://www.forbes.com/2010/06/11/fitbit-tracker-pedometer-lifestyle-heatlh-lifetracking.html. 
  15. ↑ [citation needed]
  16. ↑ "Fitbit Blog". http://blog.fitbit.com/?p=522. 
  17. ↑ "Fitbit Ultra". takeitapart.com. https://www.takeitapart.com/guide/11. 
  18. ↑ "Fitbit Ultra Repair". http://www.fatguyshrinking.com/fitbit-ultra-repair/. 
  19. ↑ "Fitbit! In which I switch from my failing Fitbit Ultra to a Fitbit One, with error messages.". https://azurelunatic.dreamwidth.org/7102302.html. 
  20. ↑ "Fitbit One Review" (in en-US). 18 December 2012. http://www.technicallyrunning.com/2012/12/fitbit-one-review/. 
  21. ↑ Wilson, Mark (3 October 2012). "Fitbit's Newest Gadget: 24/7 Fitness Tracking Meets 24/7 App Syncing". Co.Design. Fast Company. http://www.fastcodesign.com/1670906/fitbits-newest-gadget-247-fitness-tracking-meets-247-app-syncing#1. 
  22. ↑ 22.0 22.1 "Fitbit Supported Devices". fitbit.com. http://www.fitbit.com/devices. 
  23. ↑ Fitbit, Inc.. "Fitbit Zip User Manual". https://help.fitbit.com/manuals/manual_zip_en_US.pdf. 
  24. ↑ "Fitbit Flex Wireless Activity & Sleep Wristband – Specifications". Fitbit. https://www.fitbit.com/au/flex#features. "Flex has been tested up to 1 ATM meaning it is sweat, rain and splash-proof. However, the device is not swim-proof." 
  25. ↑ "The best activity tracker yet... The Fitbit Force reviewed". 21 October 2013. http://www.fitgadgetreviews.com/fitbit-force-review/. 
  26. ↑ "Fitbit Apologizes To Customers Who've Experienced Skin Reactions". HuffPost. 15 January 2014. http://www.huffingtonpost.com/2014/01/14/fitbit-apologies-_n_4599193.html. 
  27. ↑ 27.0 27.1 CEO letter 2/20/14. February 20, 2014.
  28. ↑ 28.0 28.1 "Fitbit Recalls Force Activity-Tracking Wristband Due to Risk of Skin Irritation". U.S. Consumer Product Safety Commission. 12 March 2014. https://www.cpsc.gov/en/Recalls/2014/Fitbit-Recalls-Force-Activity-Tracking-Wristband/. 
  29. ↑ Burns, Matt (October 27, 2014). "Fitbit's Latest Activity Trackers Feature Heart Monitoring, Smartwatch Functions". TechCrunch.
  30. ↑ Two Surprises in Fitbit's New Charge Fitness Tracker, CIO.com, November 25, 2014
  31. ↑ "Fitbit Charge HR Wireless Heart Rate + Activity Wristband". fitbit.com. https://www.fitbit.com/chargehr#specs. 
  32. ↑ Burns, Matt. October 27, 2014 "Fitbit's Latest Activity Trackers Feature Heart Monitoring, Smartwatch Functions" TechCrunch.
  33. ↑ "Fitbit Charge HR". http://www.humavox.com/blog/wearable-week-fitbit-charge-hr/. 
  34. ↑ "Fitbit Activates Blood Oxygen Monitoring (SpO2) Feature - TizenHelp" (in en-US). 15 January 2020. https://www.tizenhelp.com/fitbit-activates-blood-oxygen-monitoring-spo2-feature/. 
  35. ↑ "Hands on: Fitbit Charge 3 review" (in en). TechRadar. https://www.techradar.com/reviews/fitbit-charge-3-review. 
  36. ↑ March 2020, Cat Ellis 31. "Fitbit Charge 4: price, features and everything you need to know" (in en). https://www.techradar.com/news/fitbit-charge-4-price-features-and-everything-you-need-to-know. 
  37. ↑ DigitMize (2020-05-13). "Fitbit Active Zone Minutes: A Definitive Guide" (in en-US). https://digitmize.com/fitbit-active-zone-minutes/. 
  38. ↑ March 2020, Mike Prospero 31. "Fitbit Charge 4: Release date, price, specs, and features" (in en). https://www.tomsguide.com/news/fitbit-charge-4. 
  39. ↑ "Fitbit has announced a customizable fitness band – the Alta". gadgetswizard. February 4, 2016. http://gadgetswizard.com/fitbit-has-announced-a-customizable-fitness-band-the-alta. 
  40. ↑ Goode, Lauren (January 5, 2016). "Fitbit's new wearable is a fitness watch called Blaze". The Verge. https://www.theverge.com/2016/1/5/10702524/fitbit-blaze-fitness-tracker-watch-lcd-announced-ces-2016. 
  41. ↑ "CES 2016 highlights". Techvedic. http://www.techvedic.com/uk/innovation-and-revolution/ces-2016-highlights/. 
  42. ↑ Cipriani, Jason (March 29, 2016). "Getting started with the Fitbit Blaze". CNET.
  43. ↑ Stables, James (March 3, 2016). "Fitbit Blaze review". Wareable. https://www.wareable.com/fitbit/fitbit-blaze-review. 
  44. ↑ Simon, Michael. "Meet Fitbit Ionic: A little smartwatch, a lot of fitness tracker". MacWorld. http://www.macworld.com/article/3219717/software-health/meet-fitbit-ionic-a-little-smartwatch-a-lot-of-fitness-tracker.html. 
  45. ↑ Kumar, Mohit (3 March 2022). "Fitbit Recalls Smartwatches over Potential Burn Hazard". TechAcute. https://techacute.com/fitbit-ionic-smartwatch-recall/. 
  46. ↑ "Fitbit Versa Specs" (in en). CNET. https://www.cnet.com/products/fitbit-versa/specs/. 
  47. ↑ Simeone, Jude (2018-10-10). "Fitbit Versa Full Specifications and Features ⋆ Smartwatch Series" (in en-US). https://www.smartwatchseries.com/fitbit-versa-full-specifications-and-features/. 
  48. ↑ "Fitbit". Engadget. http://gdgt.com/fitbit/. 
  49. ↑ "Fitbit Aria™ Wi-Fi Smart Scale". fitbit.com. http://www.fitbit.com/product/aria. 
  50. ↑ "Fitbit Flyer™ Wireless Fitness Headphones" (in en-CA). https://www.fitbit.com/en-ca/flyer. 
  51. ↑ "Blood Oxygen Monitoring or SpO2 on Fitbit Charge 3 & Charge 4". 9 July 2020. https://www.tizenhelp.com/spo2-on-fitbit-charge. 
  52. ↑ "How can Fitbit help me track my temperature?". https://help.fitbit.com/articles/en_US/Help_article/2458.htm. 
  53. ↑ "Fitbit MyHelp". https://help.fitbit.com/manuals/charge_5/Content/manuals/html/General%20Info%20and%20Specifications.htm. 
  54. ↑ "Fitbit Aria Wi-Fi Smart Scale review". CNET. 21 May 2012. https://www.cnet.com/products/fitbit-aria-wi-fi-smart-scale/. 

External links



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