01 / 16Kardian
Kardian · Proactive health monitoring, at home

Notice, days early. Your heart, monitored through the air.

A small radar disc by the bed reads resting heart rate and breathing through the duvet, every night. In care settings it has shown a change an average of 4 to 6 days before a diagnosis. Two ways to have it: the XK300 Essence, FDA-cleared and prescribed through a remote-monitoring provider, and Kardian Somily, the same sensor as a wellness product for your own bedroom.

From the team behind the FDA-cleared XK300 · 49,000+ people monitored in care settings
Two products

One sensor. Two ways to have it.

XK300 Essence
FDA-cleared · Prescription

XK300 Essence

Prescribed, through your care provider

The clinical device, FDA-cleared since 2021. Continuous heart rate and breathing from your bedroom to the clinician who looks after you. If your doctor or care provider runs a remote-monitoring programme, they can prescribe it for you.

Kardian Somily
Wellness · For home

Kardian Somily

The consumer twin of the XK300

The same sensor as a wellness product you buy for your own bedroom. Your resting heart rate, breathing, movement and time in bed, compared with your own nights. Wi-Fi or Bluetooth. Not a medical device.

Where it goes

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

Same placement for the Essence and for Somily. 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.

No wearable

No band, no ring, no patch. Nothing to remember at bedtime.

Nothing to see

No lens. No microphone. It reads movement, not pictures or sound.

Nothing to charge

USB power from the wall. It is never flat in the morning.

How it works

A pulse goes out. The body comes back.

  1. Impulse radarA tiny pulse, fifteen million times a second. Far weaker than your Wi-Fi.
  2. Through the duvetA four centimetre wavelength passes through bedding and clothing.
  3. Only when you are stillYour chest rising with each breath. Your chest moving with each heartbeat.
  4. A reading every few secondsThousands a night. Not one average in the morning.
Heart rateBreathingMovementIn bed, out of bedSleep
Every night

It reads the chest from across the room.

Six to ten thousand readings a night. Taken only when you are still, because that is when they mean something.

Your baseline

Normal for everyone is not normal for you.

It learns your own resting heart rate and breathing, night after night. Then it compares each night with yours, not with a chart.

Illustrative. Sixty nights of one person. The shaded band is their own usual. The last ten nights sit outside it.

Your night, explained

You felt drained. Your night says why.

In the morning, last night sits beside your own recent nights, in plain words. No grades, no colours to decode. The same picture reaches a clinician with the Essence, and reaches you with Somily.

Last nightCompared with your last seven
Breathing15
Heart rate58
Time in bed8h

Grey dots are your own recent nights, on your own scale. Blue is last night. Illustrative.

“Compared with your last seven nights: breathing higher, heart rate similar, longer in bed.”

That is the whole message. Your resting breathing ran a little faster all night, and your body did more work while you slept. It is often why a night that looked long still felt short.

What a shift usually means

Your body fighting something off, a late meal, a stressful week, a drink too many. Most shifts settle in a day or two, and you can watch them settle.

What it does not do

It does not diagnose anything and it is not an alarm. If a shift keeps up for several days, consider checking in with a healthcare provider.

Your breathing has a pattern

Same rate. Different night.

Two nights can average the same breaths per minute and feel nothing alike. The sensor keeps the spacing between breaths, not just the count.

Both nights average fifteen breaths a minute. Only the rhythm differs. Illustrative.

Heartbeat Clarity

Not how fast. How clearly.

How clean and regular each heartbeat looks to the radar, tracked against your own nights. In Somily, a wellness trend on the Biohacker plan. In the XK300 Essence, investigational and part of an ongoing study.

Strength and rhythm, read from chest movement. Illustrative. A wellness measure, not a medical one.

Every night

Just go to sleep. It does the rest.

Nothing to start, nothing to sync, nothing to remember. The morning summary is waiting on your phone.

Measured, not estimated

Most devices estimate. Kardian measures.

Wrist and ring

Light on your skin

A small light shines into your wrist or finger and an algorithm works backwards to a number. It has to guess through movement, skin tone and fit, and it needs charging.

Kardian radar

The chest, moving

Radar sees the chest rise with each breath and move with each heartbeat, through the duvet, from the wall. Nothing touches you. Readings are taken only while you are still.

Radar reading through the duvet

Long waves go through bedding. Short waves stop at it.

Both products use a 7.3 gigahertz impulse radar with a four centimetre wavelength. That is why it reads through a duvet in any sleeping position, and why the same radar is trusted in hospitals and care homes.

The same radar, in care

Clinically trusted. Home ready.

The XK300 is the radar Xandar Kardian has placed in hospitals, nursing homes and home care for years. The Essence is its prescription form, for your bedroom through your care provider. Somily is the wellness version you buy yourself.

2021FDA clearedXK300, 510(k) K202464
0People monitoredIn care settings across seven countries
0Readings a dayPer person, every few seconds
2024Independently certifiedOutcomes reviewed by the Validation Institute
TIME Best Inventions 2024 CES Innovation Awards 2025 iF Design Award 2026 Red Dot 2024 Deloitte Technology Fast 50 2025 Validation Institute UpLink, World Economic Forum
Featured in Fierce Biotech Fast Company Healthcare IT Today AgeTech Collaborative from AARP Lexington Herald Leader
What the care-setting record shows

Changes in resting heart rate and breathing showed up 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, seen coming201 admissions, Validation Institute 2024

Retrospective findings from the clinical XK300 in nursing homes, and published work. Average early notice before the diagnosis was recorded. Not cleared indications.

Kardian Somily is a wellness product. It is not a medical device, does not diagnose, and is not an alarm. The XK300 Essence is a prescription device supplied through remote-monitoring and care providers.

Watch

Three short films.

Kardian Somily

Start free. Go deeper when you want to.

Somily is the consumer twin of the XK300: the same sensor, made for your own bedroom, with a membership that grows with you.

Free

Health Conscious

The basics, straight to your phone.

  • Resting heart rate and breathing
  • Basic sleep and time in bed
  • Bluetooth to the appYour data stays on your phone
Monthly

Biohacker

Every night, compared with your own.

  • Your night, explainedLast night beside your last seven
  • Breathing pattern and Heartbeat Clarity
  • In-depth sleep
  • Ask your dataA chat that answers from your own nights
  • Wi-Fi to the cloud
Monthly

Biohacker and Coach

Everything above, plus guidance.

  • Everything in Biohacker
  • A coach that points to what to try nextBedtime, routine, recovery
  • More questions included

Plan prices and what is included with the device are shown at kardian.com.

Questions

The ones we get asked.

Which one is for me?

If a clinician or a remote-monitoring provider looks after you, they supply the XK300 Essence on prescription. For your own wellness at home, Kardian Somily.

Is there a camera or a microphone?

No. There is no lens and no microphone in the disc. Radar reads movement. It cannot see a face or hear a word.

Does it work through blankets?

Yes. The wavelength passes through a duvet, a topper and clothing, in any sleeping position.

Where does it go?

Above the headboard at about 1.5 metres, near the bed corner just above the mattress, or behind the bed frame. Two strips of tape, one cable to a USB plug.

Does it need charging?

No. It runs on USB power from the wall, so it is always on and never flat.

Is it safe?

The radar pulse is far weaker than the Wi-Fi already in your home. The same radar has been used in hospitals and nursing homes since 2021.

Is Somily a medical device?

No. Somily is a wellness product for your own bedroom. The XK300 Essence is the FDA-cleared, prescription version, set up through a remote-monitoring or care provider.

Ask XK-AI

Setup, placement, connection, or anything on this page. Ask XK-AI.

XK-AIThe same assistant that helps our customers with installs, here for you
Hi, I am XK-AI. Ask me where to place the sensor, how to set it up, what it reads, or which product is for you. I cannot give medical advice.

Answers are generated and grounded in this page. For anything about your health, talk to a healthcare provider.

Contact

Ask us anything.

Are you a clinician or a care provider?

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

kardianhealth.com