What this product is
ScanWatch Nova is a device sold by Withings.
From the maker's page. See the maker's page ↗ We don't repeat the maker's health claims.
What it measures
It records a single-lead ECG, heart rate, blood oxygen, skin temperature, steps, sleep and breathing, per one reviewer's list. the-gadgeteer.com ↗
How well it works in independent tests
One reviewer compared its blood oxygen readings with an oximeter and called them 99% accurate; heart rate and temperature nearly matched an Apple Watch Ultra. gadgetstouse.com ↗
Another reviewer found inaccuracies: heart rate spikes, undercounted floors, frequent inconclusive blood oxygen checks, and wrong workout detection. techadvisor.com ↗
FDA status
The maker says its ECG app is FDA-cleared to detect atrial fibrillation, and does not diagnose. withings.com ↗
Subscription
The maker says a subscription is not needed for baseline data; Withings+ is optional. withings.com ↗
Battery life
One reviewer's 12-day trip test left 22% battery, short of the maker's 30-day claim. the-gadgeteer.com ↗
Another reviewer got 20 days on a single charge. gadgetstouse.com ↗
What the maker offers
It comes with a metal Oyster band and a fluoroelastomer band, in a 42mm size and three colors. techadvisor.com ↗
Each line rests on a passage quoted word for word from the linked page (hover the link to see it). Accuracy comes only from pages independent of the maker.
About this kind of device
Fitness trackers: watches, bands and rings
Smartwatches and fitness trackers are wrist-worn monitors that people commonly use to count their steps each day.
Main risk: The pages stress that wrist-worn monitors may not count steps as accurately as hip-worn pedometers.
Research stage 2: small studies in people. What it measures and the research →
This is research on this kind of device in general, not proof that this model is accurate or right for you.
Outside reviews
No independent reviews of this product found yet.
This is general information gathered from the sources listed, not medical advice. Talk to your doctor before starting anything new.