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Withings Pulse ™

v1.0 | April, 2015

Technology Description

Steps

The number of steps is counted using a 3-axis accelerometer. Based on the movements

detected by the accelerometer, your Withings Pulse ™ knows you’re moving. It takes a few

steps for your Withings Pulse ™ to know for sure that you’re walking. Once it is certain

of that, it can count each step you take thanks to its internal algorithm.

If you start running, the accelerometer will detect it and start tracking your run after

a minute. This one-minute latency is due to the fact that your Withings Pulse ™ needs

to be sure that you’re actually running.

Distance

The total distance is based on your number of steps and the length of your stride, which

is estimated using your height and gender.

The same principle applies for your running distance.

Calories

Your Withings Pulse ™ informs you about your calories (active calories and total calories).

These are available both in the Withings Health Mate ™ app and on the screens you can set

on your Withings Pulse ™.

The number of active calories burned is based on your activity and personal data such as

your age, weight, height, and gender. All this data has a direct impact on how many calories

you burn. For example, the heavier you are, the more calories you burn.

Basal metabolic calories (calories your body burns at rest to maintain normal body

functions) are calculated based on your age, weight, height, and gender. This number is then

added to your active calories to calculate your total number of calories burned.

Elevation gain

The elevation gain is detected using an altimeter within your Withings Pulse ™. Based on

changes in barometric pressure, it can detect that your elevation is going up.

Your Withings Pulse ™ also uses the accelerometer to check that you’re moving so that

only active elevation gain is counted. It can then ignore elevation gain when you’re on an

escalator or in an elevator.

The Withings Pulse ™ does not detect your current altitude on a constant basis

above sea level for applications such as mountain climbing or skydiving.

It will only track the change as you ascend, such as the difference in altitude

when climbing a set of stairs.

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Withings Pulse Betriebsanleitung Seite 37