Question 1

Are smart body composition scales accurate?

Accepted Answer

They are highly accurate for weight and excellent for tracking trends over time. Body-fat and other composition readings use bioelectrical impedance analysis (BIA), so they are careful estimates — most useful when you compare readings taken under the same conditions rather than as a single absolute figure.

Question 2

How does the scale measure body fat and muscle?

Accepted Answer

Four electrodes send a safe, imperceptible low-level signal through your body. Muscle and water conduct it easily while fat resists it. The scale measures that resistance and, together with your height, age and sex, estimates your full body composition.

Question 3

How should I use it for the most consistent results?

Accepted Answer

Weigh in barefoot on a hard, flat surface, at the same time of day — ideally in the morning before eating or drinking. Consistency is what makes your trends meaningful.

Question 4

Can the whole family use one scale?

Accepted Answer

Yes. The app supports unlimited user profiles and the scale recognises each person automatically, keeping everyone's readings private and separate.

Question 5

Do I need Wi-Fi, or does Bluetooth work on its own?

Accepted Answer

Either works. Bluetooth 5.0 syncs to your phone when the app is open nearby; Wi-Fi lets the scale upload readings on its own, even when your phone isn't in the room.

Question 6

Does it work with iPhone and Android?

Accepted Answer

Yes — the free companion app supports iOS 11.0 and later and Android 6.0 and later, and can sync with Apple Health and Google Health Connect.

Question 7

What is the weight capacity?

Accepted Answer

The NPSWS 002 measures from 200 g up to 180 kg (400 lb), with a resolution of 0.05 kg / 0.1 lb.

Question 8

Is it safe during pregnancy or with a pacemaker?

Accepted Answer

BIA scales pass a tiny electrical signal through the body. As a standard precaution, people with a pacemaker or other implanted medical device should not use the body-composition feature, and anyone who is pregnant should consult their doctor first. You can still use it as a normal weight scale.

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Acceptable use

Liability