Fitbit Charge 2
Fitbit Charge 2 REVIEW! RIZKNOWS
Fitbit Charge 2 REVIEW!
Fitbit Charge 2 - REVIEW JimsReviewRoom
Fitbit Charge 2 - REVIEW
Fitbit Charge 2: How to Check Your Stats & Navigate the Display Fitbit
Fitbit Charge 2: How to Check Your Stats & Navigate the Display
The Fitbit Charge 2 is a worthy sequel to the Charge HR CNET
The Fitbit Charge 2 is a worthy sequel to the Charge HR


Wristband sizes

Size Length
S 140-170 mm
L 165-206 mm
XL 206-236 mm

Applications Fitbit Charge 2

Application Developer Rating
Fitbit Fitbit, Inc. 3.9
Fitbit Fitbit, Inc. 3.6

Photos - Fitbit Charge 2

Fitbit Charge 2 - Charger Fitbit Charge 2 - Outlook Fitbit Charge 2 - GPS Fitbit Charge 2 - Alarm Fitbit Charge 2 - Faces Fitbit Charge 2 - Set Fitbit Charge 2 - Band Seperation Fitbit Charge 2 - Clipped Fitbit Charge 2 - Sizes Fitbit - App - Device Fitbit - App - Exercise Fitbit - App - Steps Fitbit - App - Resting heart rate Fitbit - App - Minutes in heart rate zones Fitbit - App - Hours slept stages Fitbit - App - Sleep schedule Fitbit - App - Sleep stages Fitbit - App - Hours slept Fitbit - App - Dashboard Fitbit Charge 2 - Devices Fitbit Charge 2 Fitbit Charge 2 Fitbit Charge 2 Fitbit Charge 2 Fitbit Charge 2 Fitbit Charge 2 Fitbit Charge 2 Fitbit Charge 2 Fitbit Charge 2 Fitbit Charge 2 Fitbit Charge 2 Fitbit Charge 2 Fitbit Charge 2 Fitbit Charge 2 Fitbit Charge 2
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Fitbit Charge 2 - Specification

RatingFunctionality4.9Sesors accuracy4.2
Operating systemProprietary OSSupport updates
Available colorsBody Strap    
MaterialsSensorStainless steel
ProtectionWater ResistantWR20Dust resistantTemperature14/113
TypeOLEDBacklightConstantly workingDisplay colors1
TouchscreenTouchscreenSupport slides
ContrastAuto-BrightnessManual brightness
Primary cameraN/A
SynchronizationAndroid4.4iOSBlackberryWindows10Mac OS10.6Web
Memory cardCard slot
ApplicationsThird-Party applicationsRequired apps androidFitbit Charge 2 (Android)Required apps iosFitbit Charge 2 (iOS)
IntegrationAdd friendShare resultsCompatible appsGoogle FitMyFitnessPalUP by Jawbone
ConnectionNFCFM RadioInfrared port
NavigationConnected GPSGPSGLONASSCompassNavigatorGPS time
Bluetooth4.0 LE
Cellular network
TechnologiesGSMGPRSEDGE2G3G4GLTEHands free modeHandset
SoundHeadphone input 3.5mmDictaphone
FeaturesPlay audioPhoto viewerPlay videoJavaBrowser
BatteryLithium PolymerReplaceable
Charger1-2hoursMagnetic chargerWireless charger5volt
Battery lifeBattery life - waiting720hoursLow activity120hours
NotificationsLightVibrationIncoming callIncoming messageCall ID displayApps
WatchDigital facesAnalog-digital facesAnalog face
TimeAlarmSilence alarmStopwatchTimerWorld timeSmart alarmReminderCalendarPhases of the monthWeather
ConrolButtonsFind my phoneAbility to turn offPresentOk GoogleVoice controlFind my devicePassbook
Remote controlCamera shoot controlCall initializationRead SMSRead EmailIMMusic control
SecurityUnlock identity
ContentsManualsUSB cableChargerHeadphone модель
FitnessDynamic heart rateTraining modeReminder to moveGuided breathing sessionsCalorie consumptionDistance coveredActive minutes
DiaryFood logWater logWeight logScan barcode
SportRuningWorkoutTreadmillWalkingWeight trainingCyclingSoccerCricketTennisVolleyballTable tennisField hockeyBaseballGolfAmerican footballBasketballBadmintonRugbyBoxIce HockeySwimming Snooker EllipticalSkipping ropeIce skatingBowlingSkiDancingYogaAerobicsPlankMountaineeringRock climbingJumpsVirtual exercise partnerSnowboarding

Fitbit Charge 2 overview

Fitbit Charge 2 is a multifunctional wristband that includes an accelerometer and an optical heart rate monitor. Its pedometer is one of the most accurate on the market. But there is no protection against water, so you cannot swim wearing this wristband. The second generation inherits Fitbit Charge HR and offers more functions at the same price. So it is worth upgrading the device!
With regard to the set of functions and accuracy of tracking, the wristband is one of the best on the market, but the price seems to be a bit high. Fitbit Charge 2 has not achieved the level of smart watches category. There is no built-in GPS and a headset with a microphone, there are no templates for messages to answer, in general, the autonomy is not impressive. The gadget copes well with fitness tracking, but doesn’t do any more.

For smart watch fans Fitbit offers, for example, Blaze model, but it is even more expensive.
In comparison with the previous generation, in Fitbit Charge 2 there are:
  • Longer straps of all sizes — M, L, XL;
  • A full-fledged OLED screen of 3.8 cm. in size;
  • The case that is not completely steel, but a plastic one with a steel frame;
  • A function of calculating the maximum consumption of oxygen by the body;
  • Moreover, it can be synchronized with GPS on your smartphone.

Fitbit Charge 2 design and construction

The general design remained to be the same as one in Fitbit Charge HR — it is a modular set consisted of a screen and two parts of the wristband. Straps can be detached easily, but they do not tear accidentally. It is necessary to get used to the wristband so that it fits your arm tightly and records the pulse, but does not clamp your wrist.

The case is now completely filled with the display. The wristband became thicker. There is a physical button for browsing screens on the one side of the wristband body, it changes information about steps, pulse, calories, training modes. On the back side there is a small protrusion of the heart rate monitor. There are no complaints about the convenience of the device. The straps became more pleasant than ones in Fitbit Charge HR, after a few days you get used to them even at night. The only shortcoming — the screen can accidentally turn on from a sudden arm movement during the sleep.

On the official site Fitbit Charge 2 is available with silicone and leather straps, you will have to pay for the leather one some additional sum of money. Silicone colors are the following: black, blue, turquoise, gray, green. The leather is light, dark and brown. Restrained colors are suitable for classical style, brighter colors suit young people more. Overall, the design of the tracker is simple that doesn’t not stand out.
When ordering, you can choose a suitable strap size. Fitbit has a PDF with a tape on its official site — you can print it out and wrap it around your arm to find out your size.

Fitbit Charge 2 main functions

  • Automatic tracking of training with switchover and pauses between exercises;
  • There is a training diary and motivating tasks in the application;
  • Social networks and communication with friends are also available in the application;
  • Finding of steps taken and distance covered;
  • Determination of height, for example, stairs and steps;
  • Constant pulse measurement;
  • Analysis of sleep time and sleep phases;
  • Calculation of the calories burned and training time;
  • Determination of maximum oxygen consumption;
  • A reminder of a lack of activity;
  • The breath control mode for calming down the pulse.

Pros of Fitbit Charge 2

Fitbit Charge 2 is a modified version of Fitbit Charge HR, and in all respects it is better than its predecessor:
  • Precise sensors. A heart rate monitor and a pedometer almost do not make errors, at this moment Fitbit has the best sensors on the market;
  • Large bright display. It has appeared only in this version;
  • Detailed statistics. It is available in Fitbit application;
  • Accurate sleep monitoring. It identifies sleep time well and it is quite good at sleep stage determination, and what’s more, according to our tests, it is one of the most accurate trackers;
  • Regular reminders. It is an excellent motivation for fulfilling goals;
  • Training mode. It offers a wide variety of kinds of sport.
  • The ability to customize the appearance of the watch and the information shown on the display;
  • An accelerometer measures steps and floors climbed accurately, even when there is no hand or arm movement;
  • An accelerometer distinguishes the movement of a hand from steps;
  • During the entire testing period the maximum heart rate deviation is only 7bpm;
  • It is easy to fasten the wristband and adjust its length, it fits your arm firmly.

Cons and features of Fitbit Charge 2

We have tested the fitness wristband Fitbit Charge 2. This wristband is much more functional than cheaper models like Xiaomi Mi Band 2, but for this cost it has too many drawbacks.
  • It does not recognize the removal from the arm. It can continue to register activity. Obtained "fictitious" results, when the wristband is not on the arm, spoil all the pulse statistics;.
  • No good water resistance. There is only a splash protection;
  • Short battery life. It can work without recharging only for 5 days;
  • Not a very convenient charger. It doesn’t have the magnet and is attached to the wristband badly;
  • Relatively heavy weight. 35 grams for a fitness wristband is already perceptible;
  • There is no smart alarm clock. The gadget signals at the exact preset time without any reaction to sleep phases;
  • An obsolete screen. It is black and white and is not touch-sensitive;
  • Limited notifications. They come only when the wristband is synchronized with the smartphone, they are not stored in the memory, it is impossible to answer a message or a call.
  • When it fits your arm loosely, the wristband shows inaccurate data, so it is often necessary to wait until the data stabilizes and the gadget recognizes the arm;
  • When being removed, it adds periodically extra minutes or even hours of training and sleep time;
  • It determines a fast sleep phase very roughly, it often confuses it with just a light sleep, like many other wristbands;
  • The strap sometimes pinches the skin, which is quite unpleasant;
  • Because of the additional plug, it is difficult to stretch the strap for a wide arm;
  • The brightness of the display is not adjustable, at night the light is too bright;
  • At night, the screen can be accidentally turned on due to an arm movement.

Errors and problems with Fitbit Charge 2

  • Failures during the sleep registration. It should be borne in mind that if you wake up for 2 minutes to drink water, then the wristband will most likely count about 10 sleepless minutes, even if you immediately fall asleep;
  • Synchronization errors. Problems are not regular, but sometimes they may occur. Periodically it cannot update sleep data during 10 minutes, even after forced synchronization;
  • Old graphs in the application. The wristband can display statistics — mostly about sleep — in the old form as it was before the firmware updating. And there are no beautiful graphs from Fitbit!
  • Incorrect tracking. Firmware bugs sometimes lead to the fact that the gadget tracks activity badly. The error is approximately 30%.

Operating recommendations for Fitbit Charge 2

Taking into account that the main disadvantages of the device are some problems with recognition of its removal, the following actions will be useful:

  • To obtain more accurate statistics, it is necessary to minimize the time of wristband absence on the arm;
  • Charge the device while taking a shower, this will minimize the inaccuracy of the data and will allow you to wear the wristband for a longer period of time during activity;
  • Put the charger in a visible place to remember to put on the device;
  • If the Bluetooth connection consumes a lot of battery charge or you simply do not want to use it, then just turn off the permanent synchronization function in the settings;
  • The manufacturer declares that the device is protected from splashes. Still it is better not to use Fitbit Charge 2 in a shower or in the swimming pool and protect it from rain;
  • In order not to get skin irritation, it is necessary to wash the strap immediately after buying — not the case itself — using warm water without soap. During the first week it is better to wash and remove the wristband for the night each day. Then it will be enough to do it once in two weeks.

Fitbit application

Fitbit is one of the best applications among all fitness trackers in relation to its convenience and sets of functions.The program for all portable gadgets designed by Fitbit is the same one, if you had a wristband before, then you will understand how it works quickly. The application is compatible with Android and iOS, connects via Bluetooth.
In more details

Fitbit Charge 2 - Alternatives

Showing 1-10 of 10 items.
PhotoUSDTitle px. MPhoursGr.
Xiaomi Mi Band 1S12Xiaomi Mi Band 1S  24015
Xiaomi Mi Band 218Xiaomi Mi Band 2  0.42"7019.4
Huawei Honor Band 332Huawei Honor Band 3 32×1280.91"10018
iWOWNfit i6 Pro26iWOWNfit i6 Pro 88×1280.73"58.218
Amazfit Arc36Amazfit Arc 72×400.42"48020
Fitbit Ionic230Fitbit Ionic  348×2501.42"96
Xiaomi Mi Band 321Xiaomi Mi Band 3 128×801.5"11020
Fitbit  Alta129Fitbit Alta 128×360.7"3628
Fitbit  Charge HR49Fitbit Charge HR  1.0"120
Garmin  vivoactive 3314Garmin vivoactive 3 240×2401.2"16843

Fitbit Charge 2 - Comparison

Brand Fitbit Xiaomi Xiaomi Huawei Honor
Model Charge 2 Mi Band 1S Mi Band 2 Band 3
Min. price USD
Official website
Release 2016 2015.11.07 2016.06.07 2017
Manufacturer Foxconn Foxconn
Country of production China China
Total weight 36.8 gram 15 gram 19.4 gram 18 gram
Body weight 14 gram 7 gram
Dimensions 225×129×2506 mm. 13.6×37×9.9 mm. 15.7×40.3×10.5 mm. 16.5×43×10.3 mm.
Available colors
Sensor Stainless steel Aluminum; polycarbonate Plastic; aluminum Plastic
Material Elastomer Silicone Thermoplastic elastomer Polyurethane
Sizes S;L;XL
Package weight 300 gram 95 gram 90 gram 104 gram
Dimensions 112×53×200 mm. 96×31×96 mm. 10×3×10 mm. 100×40×160 mm.
Water Resistant WR20 IP67 IP67 WR50
Dust resistant P6X IP6X
Temperature 14/113 °C -20/70 °C -20/70 °C
Display colors 1 colors 1 colors 1 colors
Size 1.5 inches 0.42 inches 0.91 inches
Resolution 32×128 px.
Pixel density 147 ppi
Shape Rectangle Rectangle Rectangle Rectangle
Type Lithium Polymer Li-pol Li-pol Li-pol
Capacity 41 mAh 70 mAh 100 mAh
Battery life
Battery life - waiting 720 hours 480 hours 480 hours 720 hours
Battery life - tested 15 hours 15 hours
Average time 240 hours
Low activity 120 hours 480 hours 480 hours
Charging time 1-2 hours 2 hours 2 hours 1.5 hours
Input voltage 5 volt 5 volt 5 volt 5 volt
Input current 25 mA 45 mA
Operating system
Operating system Proprietary OS Proprietary OS Proprietary OS Proprietary OS
Support updates
Android 4.4 4.3 4.4 4.4
iOS 7 7 8
Blackberry 10
Windows 10 8.1 8.1
Mac OS 10.6
Memory card
Flash 16Mb
RAM size 256Kb
Model ARM Cortex-M4
Required apps android Fitbit Charge 2 (Android) Xiaomi Mi Band 1S (Android) Xiaomi Mi Band 2 (Android)
Required apps ios Fitbit Charge 2 (iOS) Xiaomi Mi Band 1S (iOS) Xiaomi Mi Band 2 (iOS)
Unlock identity
Silence alarm
Smart alarm
Digital faces 10 2
Analog-digital faces 1
Incoming call
Incoming message
Call ID display
Buttons 2 1 1 1
Rotate to switch
Find my device
Dynamic heart rate
Training mode
Reminder to move
Guided breathing sessions
Calorie consumption
Distance covered
Active minutes
Food log
Water log
Weight log
Scan barcode
Weight training
Add friend
Share results
Compatible apps 18 3 3 3
Google Fit
UP by Jawbone
Connected GPS
Version 4.0 LE 4.0 4.0 LE 4.2
USB cable
Accelerometer 4.4 2.8 4.3 2.7
Sleep analysis 4.5 3.1 3.1 4.0
Pulsometer 3.8 2.3 4.3 2.9
Type of heart rate monitor Optical Optical Optical Optical
Functionality 4.9 2.8 3.4 4.1
Sesors accuracy 4.2 2.7 3.9 3.2