Fitbit Charge HR Manual download pdf (Page 22)

Charge HR General Info & Specifications

Sensors and motors

Your Charge HR uses a MEMS 3-axis accelerometer to measure your motion patterns

and determine your steps taken, distance traveled, calories burned, and sleep quality.

Charge HR also contains:

• An altimeter, which measures floors climbed

• A vibration motor, which allows it to vibrate when alarms go off, when you

reach a goal, and when you receive call notifications

• An optical heart rate monitor, which measures your beats per minute (BPM) at

rest and when you are exercising

Battery

Charge HR contains a rechargeable lithium-polymer battery.

Memory

Charge HR holds detailed minute-by-minute information for the most recent 7 days

and 30 days of daily summaries. Heart rate data is stored at one-second intervals

when in exercise mode and at five-second intervals at all other times.

Your recorded data consists of steps taken, distance traveled, calories burned, floors

climbed, active minutes, heart rate, and sleep tracked.

Sync your Charge HR regularly to have the most detailed data available to view on

your Fitbit.com dashboard.

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Fitbit Charge HR Manual Page 22