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Fitbit Charge
Category Limb-mounted
Developer Fitbit
Announced October 2014
Released Developers:
Consumers: November 2014[1]
Price 130 EUR [2]
Operating system IOS, Windows Phone, Windows 10, Android
Sensors 3-axis accelerometer, Altimeter, Vibration motor
Weight 23 g
Data available Good
Risk factor Moderate

Fitbit Charge is one of a series of smart fitness trackers from the American company Fitbit. It is characterized by, like its predecessors, simple design. The wristband is equipped with sensor which is able to scan all day activity of the owner, his workout and his sleep activity. Fitbit Charge is compatible with several operating systems. [4]

Main characteristics

Fitbit Charge is a smart wristband for all-day use. It is composed of an elastic strip innocuous to human skin, a metal fastening similar to conventional watches, small rectangular OLED display and sensors for scanning activity of the wearer. Of course there is also displaying the current time. The wristband has a variety of essential functions from the pedometer, which measures the achieved time and distance, to monitoring the user's sleep and a silent alarm. The last useful function is the monitoring incoming call notification.[4] Charge model is the basic version of this series. Model Charge HR is equipped in addition to basic functions even heart rate sensor, GPS and display real-time state of activities in an application on your smartphone.[5] [6]

The wristband is durable due to its material. The manufacturer states waterproof to 1 ATM, but only to sweat and rain. It is not therefore suitable for swimming or showering routine. Charge is equipped with three sensors - accelometer records physical activity, its frequency and speed. Altimeter is capable with accelometrem measure together the number of floors achieved per day. Vibrating motor is needed for displaying notifications. In the case of incoming call motor will vibrate slightly to warn holder about the event. However, it is not possible to receive calls directly through the device.[7] [8]

Developer highlights long life battery and compatibility with a wide range of devices, from smartphones to PCs. After pairing with application in mobile phone or another desk, application is able to display customized settings of wristband, important informations about owner’s activity – number of steps, duration of motion and workout, distance, quantity of steps, but also a number of burned calories. Wristband stores these information in application and are long time monitored. [4]

For full use of all functions Fitbit Charge is necessary to have installed the original application on your smartphone or other device. Fitbit has developed a unified application that is compatible with a variety of operating systems and platforms - Windows Phone, iOS and Android. Developers provides a list of devices that are suitable for Fitbit on their website. Synchronization wristband with phone pass through Bluetooth 4.0 and runs over a distance of up to 6 meters (20 feet). Transfer of information to computer runs via a Windows (Vista and later), Mac OS X and above, iPad 3 gen and up and leading Android and Windows device.[4][6]

Other Fitbit models (produced in 2015)[9]

  • Fitbit Zip
  • Fitbit One
  • Fitbit Flex
  • Fitbit Charge HR
  • Fitbit Surge


Fitbit is smart device, which is able to monitoring owner's all-day and fitness activity. Throughout the stored information monitors and assists the wearer to achieve better results in his fitness and healthy lifestyle.

Company & People

Fitbit was founded in 2007 in San Francisco, CA.[4]

  • James Park - CEO, President & Co-Founder
  • Eric N. Friedman - Chief technology officer & Co-Founder
  • Edward M. Scal - Chief revenue officer
  • Bill Zerella - Chief financial officer
  • Steven Soderberg - VP, Information Technology

Important Dates

  • Fitbit was founded in May 1 2007 in San Francisco. [10]
  • Fitbit iPhone App is availible in October 2011.[11]
  • Fitbit Zip is announced in September 2012.[11]
  • Fitbit Flex is announced in January 2013.[11]
  • Fitbit Windows Phone platform is availible in July 2014.[11]
  • Fitbit Charge, Charge HR and Surge is announced in October 2014.[11]

Ethical Issues

There has not been reavealed any strong ethical issues related to Fitbit device. One problem could be the protection of user privacy. This question, however, relates to almost all the wearables that operate on the basis of providing personal information to an external processor, most equipment manufacturers or another organization.[12] Most manufacturers, however assures their customers that their data are secure against misuse.

Fitbit Force Skin Irritation

Health Risks

Skin irritation appeared at users wrist in one of the models. First, Fitbit Force, which was already recalled last year. For models Charge and Charge HR are emerging similar difficulties. Fitbit company reacts to complaints as misconduct with the hygiene recommendations. Skin burning could be caused by sweat, water held under band[13] or it could be alergy reaction to materials of device (band and nickel in stainless steel).[14]

Some US insurers together with the employers included smart bracelets like Fitbit in their wellness programs. The aim of these programs is to force clients to invest more time and money in their health. The motivation for clients shall be reduction of the rate of health insurance they must pay. Many North American companies now invests in improving the health of of their employees through the purchase of smart bracelets. These programs offer more benefits than just the reduction of obligatory insurance. In addition to the health, employees can turn their achieved goals , for example, in a day off. [12]


Fitbit products are not recognized as medical aids. Users use this device to improve their health through the monitoring of their physical activity all day long. It is therefore a wellness device that can help users to lead a healthy lifestyle. Due to the functions of mobile applications (from the activity monitor to entry the menu), the user himself watching his daily routine and in accordance with the recommendations he can prevent various health complications.

Public & Media Impact and Presentation

Fitbit is a term among wearables and came to the attention of the media. Each new model Fitbit is very expected. Most mentions of this technology is in the form of user and expert reviews. Although Fitbit has media attention only of fans and users, they also have negative advertising. In 5/2015 Fitbit was accused by its main competitor, by Jawbone, taking over employees and stealing know-how.[15]

Public Policy

There is not established some legislation regarding the protection of personal data provided by the user. The data are stored in the web interface, which can lead to information theft, or other illegal dealing with personal data of individuals.

Related Technologies, Project or Scientific Research

There is no related technologies, project or scientific research.


  1. FITBIT STAFF. Fitbit Charge, Charge HR & Surge: Welcome to a Whole New World of Fitness [online]. October 27, 2014. Available online at: (Retrieved December 15, 2015
  2. Fitbit Store [online]. December 13, 2015. Available online at:
  3. Shows if the device is a standalone wearable computer or if it needs to be connected to a processing unit to function.
  4. 4.0 4.1 4.2 4.3 4.4 Energize your day. October 20, 2015. Fitbit [online]. Available online at:
  5. MRÁZ. Jakub. Recenze Fitbit Charge HR: srdeční záležitost pro každého. February 19,2015. [online]. Available online at: (Retrieved October 20,2015)
  6. 6.0 6.1 STABLES. James. ​Fitbit Charge HR review. December 15, 2015. [online]. Available online at: (Retrieved December 20, 2015)
  7. DC RAINMAKER. A few quick thoughts on Fitbit’s new activity trackers, GPS watch (with optical heart rate!) October 27, 2014. [online]. Available online at: (Retrieved November 10, 2015)
  8. JARY. Simon. Fitbit Charge review: stats visible on wrist display. December 17, 2014 [online]. Available online at: (Retrieved November 10, 2015)
  9. FITBIT. [online]. Available online at: (Retrieved December 06 2015)
  10. Company Details. [online]. Available online at: (Retrieved December 4 2015)
  11. 11.0 11.1 11.2 11.3 11.4 FITBIT STAFF. Product News & Updates. [online]. Available online at: (Retrieved December 4 2015)
  12. 12.0 12.1 SATARIANO. Adam. Wear This Device So the Boss Knows You’re Losing Weight. August 21, 2014. [online]. Available online at: (Retrieved November 9 2015)
  13. STABLES. James. Fitbit Charge skin irritation complaints still plague company. February 13, 2015. [online]. Available online at: (Retrieved November 10 2015)
  14. Fitbit Help. Is my Charge, Charge HR, or Surge safe to wear? February 19, 2015. [online]. Available online at: (Retrieved November 10 2015)
  15. de la MERCED. Michael J. Jawbone Accuses Fitbit of Stealing Information by Hiring Workers Away. May 27, 2015. [online]. Available online at: (Retrieved December 07 2015)