You made it! Google Store is your new home for all things Fitbit. Start shopping below or get help with your Fitbit account here.

Unlock the power of PurePulse heart rate

See how our first automatic, continuous wrist-based heart rate technology is helping you understand your heart on a new level.1
Discover the benefits of heart rate tracking
Know your zoneUse heart rate zones to maintain the right intensity.
Track sleep qualityUse your heart rate to track sleep stages.
Reach weight goalsGet a more accurate measure of calories burned.
Manage stressDo guided breathing sessions personalised for your heart rate.
Heart rate tracking made for every day
Heart rate tracking shown on screen Heart rate tracking shown on screen In the past, heart rate tracking was expensive, awkward and uncomfortable. With the invention of PurePulse, we made it accessible to anyone. Inspired by a thimble-sized sensor used in hospitals, we conducted extensive research to make wrist-based heart rate tracking work in all types of environments.
Photoplethysmography: a long word with a short explanation
Front of watch and sensory on the back of the watch Front of watch and sensory on the back of the watch We use light to measure blood flow. As your heart beats, the volume of blood in your wrist rises and falls. Blood absorbs light, so a sensor shines a light onto the skin while light detectors called photodiodes measure how much light is being absorbed. The rise and fall of the absorption signal represents each heartbeat. This tells you how many times your heart is beating per minute.
Innovation backed by research
Heart rate tracking shown in the app Heart rate tracking shown in the app In a number of external studies worldwide, PurePulse technology has surpassed industry expectations. And over 50 patents related to PurePulse technology have been awarded to Fitbit’s heart rate innovation in the process.
Heart rate tracking shown on screen Heart rate tracking shown on screen
Features and tools powered by heart rate
  • 1
    Fitbit launched the first automatic, continuous wrist-based heart rate technology in 2014 with PurePulse.