What this product is
Sleep Analyzer 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 tracks sleep duration, sleep stages, heart rate, snoring and sleep apnea episodes with a severity rating, from under the mattress. withings.com ↗
How well it works in independent tests
A study partly funded by Withings, with 117 healthy adults, found 87% overall accuracy for sleep versus wake against home polysomnography. medrxiv.org ↗
The same study found 63% mean accuracy for sleep stages, and it overestimated total sleep time by about 20 minutes. medrxiv.org ↗
Subscription
The maker says a Withings+ subscription is optional, with a free first month and then a monthly or yearly fee. withings.com ↗
What the maker offers
The box holds the sensor pad, a USB power adapter and a quick installation guide. withings.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
Sleep trackers
Sleep trackers are wearable devices and apps that claim to measure how long and how well you sleep.
Main risk: A review of studies found wrist-worn sleep trackers are not as reliable as polysomnography, a lab sleep test, for key measures like total sleep time.
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.