The Fitbit Charge 3 is a band based fitness tracker with a 0.8 inch monochrome OLED display steps, sleep, and calories. It has a touchscreen display. The manufacturer claims a battery life of 7 days. It is available in small, large sizes. It has the following sensors: MEMS 3-axis accelerometer, optical heart rate monitor, altimeter. It has notifications for call, text, calendar events. It has socialization features: Share stats with friends and family. It includes inactivity alerts which remind you to move if you are sitting for a long time. It has extra features such as: guided breathing sessions, female health tracking, Included accessories: USB charging clip. Its dimensions are 0.6 x 0.4 inches (width/thickness) and it weighs 0.9 ounces.
Activity results read from device
Activity results read from deviceSome results can be read directly from the fitness tracker without having to depend on the smartphone, tablet, or computer.
Displays timeCan display the time of day on the fitness tracker.
Touch screenAn "at-wrist" display which is sensitive to finger contact.
Color displayA display that has color.
Display typeLCD, OLED, or LED.
monochrome touchscreen OLED
BacklightThe display has a backlight for reading it in dimly lit conditions.
Real-time heart-rate monitor
Real-time heart-rate monitorContinuously measures your heart rate.
Heart-rate monitor type
Heart-rate monitor typeIndicates what type of heart-rate monitor is used, if at all. The three types are stationary, active and passive. Stationary heart-rate monitors measure your pulse only at intervals you choose, mostly at rest. Active heart-rate monitors display your pulse continuously, or automatically at various intervals. Passive heart-rate monitors do not provide real-time heart rate monitoring.
Heart-rate monitor requires chest strap
Heart-rate monitor requires chest strapUnlike those that have the heart-rate sensor built-in to the fitness tracker, a separate accessory worn on your chest is required.
Step countingA basic feature of fitness trackers which automatically counts the amount of steps taken during daily activities.
Inactivity alertsThe fitness tracker alerts you when you've been inactive for a long period of time.
Multi-sport trackingProvides the most accurate results from the sports that are listed such as: running, walking, swimming, biking, cardio, and cross-training workouts.
running, biking, hiking, weights, yoga
Sensor typesSensors in the tracker detect real-world data which is translated into results like step count and heart rate measurements.
WiFiA long-range wireless communication technology that enables a fitness tracker to pair with a smartphone and with other devices within a home network or remote location via the Internet.
Music controlsControls music being played on your smartphone or directly from the device.
GPS trackingConnects to GPS satellites to measure distance you moved during various exercises.
OS compatibilityList of compatible operating systems such as iOS, Android and Microsoft.
iOS, Android, Windows
App nameThe manufacturer's app that you can download and install on the smartphone, tablet, or computer. The app presents the full amount of data.
Battery lifeAs claimed by the manufacturer.
Battery removableShows whether the model has a removable battery.
NotificationsThe fitness tracker alerts you whenever your smart device receives a new text, phone call, or email, etc.
Notification typesAlerts you to incoming emails, text messages, calendar reminders, and phone calls.
calls, text, calendar events
SocializationSharing results of activities among a circle of friends. Some results include each friend's progress toward goals. Fitness milestones are celebrated with badges. Sends cheers and taunts while competing in group activities.
Socialization featuresSharing results of activities among a circle of friends. Some results include each friend's progress toward goals. Fitness milestones are celebrated with badges. Sends cheers and taunts while competing in group activities.
share stats with friends and family
Sleep trackingProvides information about the quality and duration of your sleep habits.
Sleep sensing method
Sleep sensing methodAuto mode senses when you are sleeping. Manual mode requires you to activate a setting on the device before you go to sleep.
Floors climbedEstimates the number of floors that you've climbed.
Food trackingCan log food types into the app to keep track of daily calorie consumption.
Alarm typeThe device alerts you via sound or vibration.
Included accessoriesIndicates what additional accessories are included.
USB charging clip
Bluetooth USB dongle
Bluetooth USB dongleIncludes a dongle which can be used in case your old computer lacks Bluetooth.
TypeFitness trackers are available in several types, such has watch, band, and clip-on. A watch type fitness tracker has a data display similar to a smartwatch. A band is also worn on the wrist but has limited or no display capability. A clip-on is worn in various locations on your body via a clip to your clothing.
SizesThe strap is available in this range of sizes.
Display sizeThe diagonal size or diameter (if round) of the active display area measured to the nearest tenth of an inch.
Dimensions (WxD)Dimensions of the device in inches.
0.6 x 0.4
WeightThe weight in ounces of the fitness tracker.
WarrantyThe manufacturer's stated length of warranty.