Fitbit Charge HR Wristband | Black | Small or Large

PurePulse Heart Rate
Get continuous, automatic, wrist-based heart rate & simplified heart rate zones

Long Battery Life
Lasts longer than competing trackers with a battery life up to 5 days

Workouts + All-Day Activity
Track workouts, heart rate, distance, calories burned, floors climbed, active minutes & steps

Auto Sleep + Alarms
Monitor your sleep automatically & set a silent alarm

Caller ID + Watch
See daily stats & time of day, and get call notifications with compatible devices

Wireless Syncing
Sync stats wirelessly & automatically to leading smartphones and computers

Exercise Tracking
Get real-time run stats & review routes, splits and workout summaries on the app

For better fitness,start with heart.
Let your heart be your guide with Charge HR. Monitor heart rate automatically and continuously right on your wrist to accurately track calorie burn, maintain workout intensity, maximize training and optimize health- all without an uncomfortable chest strap.

Get better tracking with every beat.
Take control of your goals by using Charge HR to record your workouts and track all-day activity like heart rate, steps, distance, calories burned, stairs climbed and active minutes. With an impressive battery life up to 5 days and instant access to every stat, you don't have to look far for motivation to keep moving.

See your calls. Call the shots.
With a comfortable fit and Caller ID, Charge HR lets you stay connected in style. See incoming call notifications on display when your phone is nearby to stay in the know, on the go

Record your workouts. Meet your goals.
Use Exercise Mode to easily record workouts, see real-time exercise stats and have summaries automatically appear on your Fitbit dashboard. Use MobileRun in the Fitbit app to see pace, distance, splits and routes.

Know your nights. Improve your days.
Get a better picture of your overall health by using Charge HR to automatically track how long and how well you sleep. Sync your nightly stats to see online graphs that illustrate your sleep trends, and wake peacefully by setting a silent, vibrating alarm.

Sync up. Stay inspired.
Charge HR automatically and wirelessly syncs your stats to your computer and 120+ leading smartphones, and tracks your progress in detailed charts and graphs that keep you encouraged to reach your fitness goals.

Sizing

Small: 13.5cm to 16.51cm

Large: 16cm to 19.3cm

Sensors
Optical heart rate monitor
3-axis accelerometer
Altimeter
Vibration motor

Display
OLED

What's Included
Charging cable
Wireless sync dongle

Water Resistance
Charge HR is sweat, rain and splash proof. However, the device is not swim proof or showerproof. With any wearable device, it's best for your skin if the band stays dry and clean.

Materials
Charge HR's wristband is made of a flexible, durable elastomer material similar to that used in many sports watches. Charge HR also has a surgical-grade stainless steel buckle.

Battery and Power
We recommend charging your device every few days to ensure you are always tracking.

Battery life: lasts up to 5 days
Battery type: Lithium-polymer
Charge time: One to two hours
Radio transceiver: Bluetooth 4.0

Environmental Requirements
Operating temperature: -20° to 45° C
Maximum operating altitude: 9144 metres

Memory
Tracks 7 days of detailed motion data, minute by minute.
Tracks 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

Syncing
Charge HR syncs automatically and wirelessly to tablets, computers and 120+ leading iOS, Android and Windows smartphones using Bluetooth 4.0 wireless technology.

Technical Details
Syncing range: 6 metres
Call notifications via Bluetooth 4.0
Syncing to computers requires Internet connection and USB port
Syncing to mobile devices requires Bluetooth and Internet connection
Syncs with Windows Vista and later, Mac OS X 10.6 and up, iPhone 4S and later, iPad 3 gen. and later, and leading Android and Windows devices