Heart Rate +
Heart Rate +
- PurePulse® Heart Rate
& Connected GPS
- Call, Text & Calendar Alerts
- Cardio Fitness Level
- Guided Breathing Sessions
- All-Day Activity
Auto Sleep Tracking
& Sleep Stages
- SmartTrack™ Auto Exercise Recognition
- Reminders to Move
- Long Battery Life Up to 5 days*
Conquer your day.
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.
Shed light on your night.
Auto Sleep Tracking & Alarms
Automatically track your sleep duration and consistency. Then wake up peacefully with a silent alarm.
Sleep Stages new
Using heart rate, Charge 2 shows your time in light, deep and REM sleep to help you better understand your sleep quality.See benefits of sleep tools
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. Learn more.
Take time to breathe.
Guided Breathing Sessions
Find moments of calm throughout your day with personalized breathing sessions based on your real-time heart rate. Learn more.
Smarter all over.
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.
Style it your way.
From workouts to nights out, transform your Charge 2 with classic accessories, stylish sport bands, luxe leather bands or special edition trackers.
See the whole picture with the Fitbit app.
Charge 2 syncs wirelessly & automatically to 200+ iPhone, Android and Windows devices.EXPLORE THE FITBIT APP
- Fitbit Blaze tracker
- Blaze classic wristband
- Stainless steel frame
- Charging cable
Sensors & Components
- 3-axis accelerometer
- 3-axis gyroscope
- Optical heart rate monitor
- Ambient light sensor
- Vibration motor
- Color LCD
Battery and Power
We recommend charging Fitbit Blaze every few days to ensure you are 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 Blaze is sweat, rain and splash proof, but is not swim proof. We recommend taking it off before showering, as it’s best for your skin if the band stays dry and clean.
If Fitbit Blaze 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, and regularly clean your band and wrist. Learn more.
The Fitbit Blaze classic band is made of a flexible, durable elastomer material similar to that used in many sports watches, and includes a surgical-grade stainless steel buckle and frame. The gunmetal Blaze features a gunmetal stainless steel buckle and frame made with a premium PVD plating process. The pink/gold Blaze features a 22k gold-plated stainless steel buckle and frame also made with a premium PVD plating process.
Like all heart rate tracking technologies, accuracy is affected by physiology, location of device, and different movements. Learn more about wear during workouts.
- Operating temperature: undefined° to undefined° C
- Maximum operating altitude: undefined m
Syncing & Notifications
Using Bluetooth LE wireless technology, Fitbit Blaze sends smartphone notifications and syncs automatically to computers and undefined+ mobile 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 undefined m
- 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 4.4 and later, and Windows 10 devices.
- Music control via Bluetooth Classic on Android, iOS and Windows devices.
*Your fully charged Fitbit Charge 2 has a battery life of up to 5 days. Note that battery life and charge cycles vary with use, settings and many other factors; actual results will vary.