Continuous, automatic heart rate tracking right on your wrist—only from Fitbit.
Get more benefits with every beat—without an uncomfortable chest strap.
Better track calorie burn all day and during exercise to stay in control of your weight.
Check real-time heart rate to ensure you’re giving the right amount of intensity during workouts.
Use simplified heart rate zones to tailor your workouts on the spot and make the most of training time.
See when your health is improving by analyzing your all-day and resting heart rate trends.
Your muscles need oxygen to burn calories and generate energy. Since exercise requires more energy, your heart beats faster to deliver more oxygen through the blood.
By measuring how fast your heart is beating, Fitbit trackers with PurePulse technology can more accurately gauge how many calories you’re burning.
As fitness improves, your heart becomes more efficient, and is able to pump more blood and oxygen to your muscles with every beat—which is why a decrease in resting heart rate suggests improved health.
Check heart rate at a glance to gauge your effort and adjust workouts on the spot.
Set a target heart rate zone to ensure you're pushing yourself hard enough, but not overtraining.
See your time spent in each heart rate zone and review exercise summaries.
Fat Burn: a moderate intensity zone to improve basic endurance and burn fat
Cardio: a high intensity zone that helps you improve cardio performance.
Peak: a maximum intensity zone used by those at higher fitness levels for interval and endurance training
*Talk to your doctor to learn which heart rate zones are right for you.
When the heart beats, your capillaries expand and contract
PurePulse LED lights reflect off the skin to detect that change
Finely tuned algorithms are applied to measure heart rate automatically and continuously
fitbit charge 2™
Comfortable design for wear during exercise, everyday activities, and sleep
Uses low-power battery
technology for longer life