01 / 08Essence
XK300 Essence · FDA-cleared · Prescription Cleared for heart rate and breathing rate in adults

The clinical sensor, in your own bedroom.

The XK300 Essence and its box

The XK300 Essence and its box

Reads your resting heart rate and breathing through the duvet, every night, and sends them to the clinician who looks after you.

FDA clearedsince 2021 · 510(k) K202464
49,000+people monitored in care settings

Included for eligible Medicare beneficiaries

And for patients in payer-sponsored remote patient monitoring programmes. United States only. Co-pays may apply. Prescription only.

  • FDA-cleared, Class II medical device
  • Contact-free, wireless, no charging
  • Set up yourself in a few minutes
  • Free delivery and returns · 1-year warranty

Our remote-monitoring partner confirms eligibility within 24 hours. If you qualify, you receive a prescription and a link to complete the order. How it was validated, what is cleared and what is published: read the science.

Why it matters Retrospective care-setting findings · not cleared indications · not a claim

Looking back at care records, readings had shifted days before a diagnosis.

The Essence reads your resting heart rate and breathing every night, from the wall, and your care team sees each night beside your own usual. In nursing homes using the same XK300, the readings had moved an average of 4 to 6 days before a urinary tract infection, COVID-19 or end-of-life decline was recorded. The numbers, below. Three short films explain how it reads you and what makes it different.

Intervals are averages from retrospective analyses, measured after the fact, and are shown as research. The XK300 is cleared for measuring heart rate and breathing rate in adults; it is not an alarm system. XK does not predict or diagnose health events.

The science Peer-reviewed · regulator records · independent certification

How it measures, and how we know.

Check your eligibility United States only · Medicare and payer RPM programmes · no cost to ask

Tell us a little, and a care coordinator calls you.

For people living in the United States. The XK300 Essence is supplied through remote patient monitoring (RPM), a Medicare-covered service that your care team bills; many Medicare Advantage and payer plans cover it too. One of our care coordinators will be in touch to arrange a call with one of our doctors. Expect the call from (855) 289-2002.

Who this is for

  • You live in the United States.
  • You have Medicare, Medicare Advantage or a payer plan with remote patient monitoring coverage.
  • A clinician agrees that monitoring your resting heart rate and breathing at home is appropriate for you.

Outside the United States, or without coverage, the Essence is not available to individuals at this time. Anywhere in the world, Kardian Somily, our wellness product, can be bought directly. See Somily.

How it is covered

Your care team bills Medicare under the remote patient monitoring codes: CPT 99453 (set-up and education), 99454 (the device and daily readings, at least 16 days in 30), 99457 (the first 20 minutes of monitoring and care management each month) and 99458 (each further 20 minutes). Where you are also enrolled in chronic care management (CCM, CPT 99490, 99439, 99491), the same readings support that programme.

Coverage, co-pays and deductibles depend on your plan. The care coordinator confirms yours before anything is ordered. Codes are shown for information; your provider decides what is billed.

How you get it

Your details go to our remote-monitoring partner's care coordinators, who confirm eligibility and arrange the doctor's call. If you qualify, you receive a prescription and a link to complete the order. Nothing is charged for asking.

How you get it

Through the people who look after you.

  1. Request a callbackYour name, contact details and address. Request the call.
  2. Talk to a remote-monitoring partnerBook a consultation. They call within 24 hours, confirm eligibility, and finalise the prescription and delivery address.
  3. It goes up by the bedOn the wall or on the nightstand, plugged in, a few minutes. See the placements.
  4. Your care team sees the trendResting heart rate and breathing, every night, beside your own recent nights, so a change against your own pattern stands out to them between visits.
Where it goes

A disc by the bed. Three ways to place it.

Two strips of tape, one cable to a USB plug. Then go to sleep.

The sensor above the headboard
01

Above the headboard

About 1.5 metres from the floor, on your side of the bed. If you share the bed, left or right above you. If you sleep alone, the centre.

The sensor near the bed corner
02

Near the bed corner

It does not have to sit high. Closer to the body, just above the mattress, keeps the cable out of sight.

The sensor behind the headboard
03

Behind the bed frame

Out of sight between the wall and the headboard, as long as the bed does not need to sit flush to the wall and the headboard is not a solid metal plate.

Specifications What it measures · size · power · regulatory
Measures
Heart rate and respiration rate in adults (FDA-cleared). Body motion.
Regulatory
Class II medical device · FDA 510(k) K202464, 2021 · prescription only
Radar
Impulse radar (UWB), computed on the sensor
Connectivity
Communication module supplied, set up by your provider
Size
9.4 × 4.3 × 9.4 cm (3.7 × 1.7 × 3.7 in)
Weight
120 g (0.26 lb)
Placement
Wall-mounted or on a nightstand
Power
USB, continuous. Nothing to charge.
In the box
Sensor, communication module, plug, installation guide
Warranty
1 year
What your care team sees Heart rate and breathing: FDA-cleared measurements · sleep: wellness only

Everything they need, nothing they don't.

Vitals

Resting heart rate and resting breathing rate, including the breathing waveform, shared continuously with your remote-monitoring team.

Sleep duration and quality

Estimated from heart rate and breathing patterns, as general wellness information. Not for diagnosing or treating any condition.

How rested you woke up

From the night's data, an estimate of how recharged you are. Think of it as a battery for body and mind.

Radar, not wearables

Works through bedding and clothing. Nothing to wear, remember or charge.

Learns what is normal for you

A personal baseline over time. Changes are measured against your own pattern, not a population average, so your care team sees what is unusual for you.

Privacy first

Only anonymised health-signal data goes to your care team. No camera, no microphone. Everything else stays private.

Caregiver access

Your remote-monitoring team watches around the clock. Family members and caregivers can be given access too.

The XKare app Free · iPhone and Android

Your nights, on your phone too.

The same XKare app pairs with the Essence. Your care team reads the clinical record on their side; you see your own nights: sleep, breathing, resting heart rate and how settled the night was, each beside your recent ones. Sleep and readiness are shown as general wellness information, not as a diagnosis.

The care-setting record Retrospective findings · not cleared indications

Looking back at the records, readings had shifted days before a diagnosis.

4.3 daysUrinary tract infection108 events
4.0 daysCOVID-19189 events, published 2024
6.3 daysEnd of life390 journeys
75.6%Of hospital transfers were preceded by a baseline-change notice201 admissions, Validation Institute 2024

Retrospective findings from the XK300 in nursing homes, and published work: the average interval between a shift in readings and the recorded diagnosis, measured after the fact. Part of ongoing discovery and research, shown as what we found, not as claims. Indications for use: heart rate and respiration rate in adults. Not an alarm system. XK does not predict or diagnose health events.

In their words Personal experiences · not clinical evidence

Larry and Susan bought the sensor and have lived with it at home for months. Precious Myers Brown uses it in the facilities she runs. Dr. Serrano is a physician whose facilities use the clinical XK300. Courtney lived with the sensor for several weeks and was compensated for her time. Each speaks from their own experience; none was scripted.

Questions

About the Essence.

Can I buy the Essence myself?

No. It is a prescription device, supplied through your doctor, care provider or remote-monitoring programme. If you want a wellness product for your own bedroom, without a prescription, that is Kardian Somily. It is a separate product, not the cleared device.

Who sees my data?

The care team that prescribed it. There is no camera and no microphone; the sensor reads movement, not pictures or sound.

We are two in the bed. How does it know who it is reading?

It collects from the closest body. Mount it above your side of the bed, left or right, and it reads you. Two people, one sensor each, above each side, each linked to its own person by your care team. There is no app to set up: the Essence reports to your remote-monitoring team, not to your phone. Hugging or drifting over for a while is fine: if it picks up two sets of vital signs it pauses, and with thousands of readings a night, a couple of hours on the wrong side barely moves your baseline. See the two-sensor bedroom.

How big is it?

About 9.4 by 4.3 by 9.4 centimetres (3.7 by 1.7 by 3.7 inches), 120 grams. Wall-mounted or on a nightstand. USB powered.

What does it need at home?

A wall socket for the USB plug and the communication module that comes with it. Your provider sets up the connection.

Is it safe?

Yes. The radar runs at more than a hundred times less power than the Wi-Fi router already in your home, and has been used in hospitals and nursing homes since 2021.

Ask XK-AI

Need answers now? Installation. Reimbursements. Customer support. Anything, just ask.

Are you a clinician or a care provider?

Programmes, evidence and pricing for organisations live on our clinical site.

kardianhealth.com

Want it for yourself, without a prescription?

Kardian Somily is our general wellness product for your own bedroom. A separate product, not the cleared device.

Kardian Somily