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Table 1 Fitbit and Jawbone activity tracker characteristics (searched May-July 2015)

From: Systematic review of the validity and reliability of consumer-wearable activity trackers

Tracker Released date Selected measures Placement Size (cm) Weight (g) Cost (US$) Discontinuation
Fitbit
Fitbit Classic (also referred to as the "original Fitbit" or "Fitbit Tracker") September 2008 Steps, distance, calories, sleep Waist, pocket, bra 5.5(h) × 1.9(w) × 1.4(d) 11 Not available Winter 2012: discontinued
Fitbit Ultra October 2011 (new hardware upgrade to the Classic) Steps, distance, calories, sleep, altimeter Waist, pocket, bra, wrist (requires Ultra sleep band) 5.5(h) × 1.9(w) × 1.4(d) 11 Not available August 2012: discontinued
Fitbit One September 2012 (update to the Ultra) Steps, distance, calories, active minutes, sleep, altimeter Waist, pocket, bra 4.8(h) × 1.9(w) × 1.0(d) 9 99.95  
Fitbit Zip May 2013 Steps, distance, calories, active minutes Waist, pocket, bra 3.6(h) × 2.9(w) × 1.0(d) 8 59.95  
Fitbit Flex May 2013 Steps, distance, calories, active minutes, sleep Wrist Small: 14.0–17.6(c) × 1.4(w) 13 99.95  
Large: 16.1–20.9(c) × 1.4(w) 15
Fitbit Force October 2013 Steps, distance, calories, active minutes, sleep, altimeter Wrist Small: 14.0–17.6(c) × 1.9(w) 31 Not available February 2014: recalled by company because of skin reactions to the band
Large: 16.1–20.9(c) × 1.9(w)
Fitbit Charge November 2014 Steps, distance, calories, active minutes, altimeter, sleep Wrist Small: 14.0–17.0(c) × 2.1(w) 23 129.95  
Large: 16.1–20.0(c) × 2.1(w)
Extra Large: 19.8–23.0(c) × 2.1(w)
Fitbit Surge January 2015 Steps, distance, calories, active minutes, altimeter, sleep, heart rate, GPS Wrist Small: 14.0–16.0(c) × 3.4(w) 77 249.95  
Large: 16.0–19.8(c) × 3.4(w)
Extra Large: 19.8–22.6(c) × 3.4(w)
     Small: 14.0–17.0(c) × 2.1(w)    
Fitbit Charge HR January 2015 Steps, distance, calories, active minutes, altimeter, sleep, heart rate Wrist Large: 16.1–19.4(c) × 2.1(w) 23 149.95  
Extra Large: 19.4–23.0(c) × 2.1(w)
Jawbone
Jawbone UP November 2011 Steps, calories, distance (app), sleep Wrist Small: 14.0–15.5 19 99.99 December 2011: company provided refunds because the band had trouble holding a charge and synching to the band hardware
Medium: 15.5–18.0 21
Large: 18.0–20.0 23
Jawbone UP24 November 2013 Steps, calories, distance (app), sleep Wrist Small: 5.2(w) × 3.5(h) (inner); 6.6(w) × 5.0(h) (outer) 19 129.99 July 2015: no longer for sale on the company's website
Medium: 6.3(w) × 4.0(h) (inner); 7.6(w) × 5.4(h) (outer) 22
Large: 6.9(w) × 4.3(h) (inner); 8.1(w) × 5.6(h) (outer) 23
Jawbone UP MOVE November 2014 Steps, calories, distance (app), sleep Waist, pocket, bra, wrist (requires separate wrist strap) 2.8(diameter) × 1.0(d) 7 49.99  
Jawbone UP2 April 2015 Steps, calories, distance (app), sleep Wrist 14.0–19.0(c) × 1.2(w) 25 99.99  
Jawbone UP3 November 2014 Steps, calories, distance (app), sleep, bioimpedance (heart rate, respiration, galvanic skin response), skin and ambient temperature Wrist 14.0–19.0(c) × 1.2(w) 29 179.99  
Jawbone UP4 July 2015 Steps, calories, distance (app), sleep, bioimpedance (heart rate, respiration, galvanic skin response), skin and ambient temperature Wrist 14.0–19.0(c) × 1.2(w) 29 199.99  
  1. Abbreviations: c circumference, d depth, GPS global positioning system, h height, w width