Fitbit Surge Manual download pdf (Page 13)

3. Using the navigation tabs on the left, find Clock Display and choose a clock

face. The default, called Flare, provides a visual representation of your activity

level during the current hour.

Orbit Analog Digital Flare

4. Sync your Surge to update your tracker with the new clock face:

a. Click the Fitbit Connect icon located near the date and time on your

computer.

b. Make sure your Surge is nearby and click Sync Now.

Measuring heart rate

When your heart beats, your capillaries expand and contract based on blood volume

changes. PurePulse™ LED lights on the back of your Surge reflect onto the skin to

detect blood volume changes, and finely tuned algorithms are applied to measure

heart rate automatically and continuously.

When viewing the Clock, swipe to display your current beats per minute and heart

rate zone.

Default heart rate zones

Heart rate zones let you target different training intensities to help you optimize your

workout. Your zones are calculated based on your estimated maximum heart rate,

which is 220 minus your age.

To quickly determine what zone you’re in, take a look at the heart icon:

Out of zone Fat burn Cardio Peak

• When you’re out of zone, which means you’re below 50% of your maximum

heart rate, your heart rate may be elevated but not enough to be considered

exercise.

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Fitbit Surge Manual Page 13