Are you having
a deep sleep?
Znie is a sleep care device that synchronizes brain waves with inaudible Extremely Low Frequencies (ELF), helping with the underlying causes of poor sleep.
Change your tomorrow with deep sleep.
A scientific sleep care solution for your nights, Znie S-300
ZNIE key services
One wireless ELF technology, connected to sleep, waking and quality of life.
Znie cares for underlying sleep problems.
If you're sensitive to sound
Znie generates ELF that is harmless to the human body, gently guiding brain waves over-aroused by stress into rest (alpha waves) and sleep (theta waves). Because it synchronizes brain waves without tiring the senses with light or sound, it is the most effective approach to helping improve insomnia and restoring a natural melatonin cycle.
Brain wave frequency map
Brain waves range from 0.5Hz to 100Hz depending on our physical and mental condition. Tap a band to explore.
Creative / Tranquil / Intuitive / Drowsy. Znie's Sleep mode (7.83Hz) uses this band.
How ELF brain wave synchronization works
With fine frequencies that match the brain waves of sleep, ELF guides the brain into a relaxed state.
Sleep ELF in specific bands for brain wave entrainment
Sleep engineering today excludes harmful environmental ELF and uses fine frequencies such as 4 to 8Hz theta waves to synchronize brain waves (brainwave entrainment). Rather than physically stimulating the pineal gland to force hormones out, this technology generates fine frequencies in the room that match the brain waves of deep sleep, so the brain is naturally guided into a relaxed state (alpha and theta waves). Through this process, the optimal physiological environment is created indirectly for the body to release melatonin smoothly on its own.
If you're sensitive to light
A silent ELF that stimulates no senses, helping the brain settle into the frequency it needs.
Znie Superior
How it differs from conventional sleep aids.
| Conventional | Znie | |
|---|---|---|
| Senses | Uses the sensory organs | No added stimulation, no reported side effects |
| Sound | Mostly audio, may worsen brain fatigue | Inaudible to humans and animals |
| Contact | Some require wearing | Nothing attached, works anywhere in the room |
Non-invasive technology
Brain synchronization that's safe for all ages
Conceptual comparison of relative intensity. Znie emits ELF at a lower intensity than that naturally occurring in our brains.
No accessories needed. No unnecessary physical contact, so your brain can focus solely on sleeping.
If you have a lot of stress
Two clinical studies on improving insomnia and its emotional effects.
Insomnia and emotional effects
Clinical result 1
Sleep quality and insomnia severity improved significantly, with emotional improvements in depression and anxiety as well.
Polysomnography case-control study
Clinical result 2
Method: in-house polysomnography test
A scientific sleep care solution for your nights

01
Before sleep
Znie uses pink noise only during the sleep onset stage, helping you fall asleep faster and more comfortably.
02
Deep sleep
During the deep sleep stage (NREM1 to REM), Znie delivers Alpha, Theta and Delta ELF to align with your sleep cycle.
03
A fresh morning
The 8-hour auto sleep cycle ends with Wake-up mode (1 hour).
04
Starting tonight
Starting tonight, fall asleep comfortably, naturally, and deeply with Znie.

01
Before sleep
Znie uses pink noise only during the sleep onset stage, helping you fall asleep faster and more comfortably.

02
Deep sleep
During the deep sleep stage (NREM1 to REM), Znie delivers Alpha, Theta and Delta ELF to align with your sleep cycle.

03
A fresh morning
The 8-hour auto sleep cycle ends with Wake-up mode (1 hour).

04
Starting tonight
Starting tonight, fall asleep comfortably, naturally, and deeply with Znie.
Product lineup
Znie for every part of your day, from bedside to desk.
Support
Help with using, buying and asking about Znie.







