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- Charge 2™
Conquer your day. Shed light on your night.
All-Day Activity Tracking
Track steps, distance, calories burned, floors climbed, active minutes & hourly activity with up to 5-day battery life.*
Reminders to Move
To help you stay active throughout the day, Charge 2 sends Reminders to Move that encourage you to take 250 steps every hour.
Auto Sleep Tracking
Charge 2 automatically tracks how long and how well you sleep to help you work toward a better routine.
Wake up peacefully with a silent vibrating alarm, and create a sleep schedule in the app to stay on track toward your goals.
Track specific exercises like running, weights or yoga to see your workout stats on display.
Connect to your phone’s GPS to see real-time run stats like pace and distance on your wrist, and a map of your route post-workout.
Charge 2 automatically records select exercises like hiking, biking, sports and more, so you get credit even if you forget to log a workout.
Cardio Fitness Level, Powered by PurePulse
Get a better understanding of your fitness level and see how you can improve over time with a personalized Cardio Fitness Score.
Guided Breathing Sessions
Find moments of calm throughout your day with personalized breathing sessions based on your real-time heart rate.
Call, Text & Calendar Alerts
See call, text & calendar alerts on your wrist to keep your phone out of sight and your goals in focus.
Customizable Clock Faces. Choose your clock display based on the stats you want to see and the design that suits your taste.
Fitbit Charge 2 tracker
Charge 2 Classic wristband
Sensors & Components
Optical heart rate tracker
Like all heart rate tracking technologies, accuracy is affected by physiology, location of device, and different movements.
Battery and Power
We recommend charging your device every few days to ensure that you're always tracking.
Battery life up to 5 days. Battery life and charge cycles vary with use, settings, and other factors; actual results will vary.
Battery type: Lithium-polymer
Charge time: One to two hours
Radio transceiver: Bluetooth 4.0
Saves 7 days of detailed motion data – minute by minute
Saves daily totals for past 30 days
Stores heart rate data at 1 second intervals during exercise tracking and at 5 second intervals all other times
Fitbit Charge 2 is sweat, rain and splash proof. However, the device is not swim proof or shower proof. With any wearable device, it’s best for your skin if the band stays dry and clean.
If the band gets wet or if you sweat in it, remove and completely dry the band before putting it back on. Give your wrist a rest by taking the band off every now and then.
Fitbit Charge 2's wristband is made of a flexible, durable elastomer material similar to that used in many sports watches. Fitbit Charge 2 also has a surgical-grade stainless steel buckle.
Operating temperature: 14° to 113° F
Maximum operating altitude: 30,000 feet
Syncing & Notifications
Using Bluetooth LE wireless technology, Fitbit Charge 2 sends smartphone notifications and syncs automatically to computers and 200+ leading iOS, Android and Windows devices. Certain features like smartphone notifications or Connected GPS may require Android 5.0+. Look up your device to check compatibility.
Syncing range: Up to 20 feet
Syncing requires Bluetooth LE and Internet connection. Windows 10 computers that do not have Bluetooth LE will need a wireless sync dongle in order to sync.
Syncs with Mac OS X 10.6 and up, iPhone 4S and later, iPad 3 gen. and later, Android 4.3 and later, and Windows 10 devices.
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