Znie S-300
Change your tomorrow with deep sleep. A smart sleep routine with Znie to stabilize your brain waves.
Pink noise + ELF
8-hour auto sleep cycle
122 x 140 x 115 mm, 500 g
Drag to change the angleWhy is sleeping difficult?
From bedtime to morning.

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.
Znie's proprietary technology
Znie aligns with your sleep cycle by delivering pink noise during the sleep onset stage and E.L.F (Alpha, Theta, Delta) waves during the deep sleep stage (NREM1 to REM) and naturally synchronizes your biological rhythm with your brain waves.
Auto-modulated 8-hour sleep cycle system
The ELF band changes automatically with each sleep stage. Tap a segment.
The slowest band of the brain wave spectrum.
A conceptual view of the sleep cycle table in the catalogue. Repeated segments are not drawn to exact time scale.
Brain wave synchronization features
Proprietary wireless Extremely Low Frequency (E.L.F) transmission technology
Pink noise tracks co-developed with professional composers
Auto-modulated transmission system aligned with an 8-hour sleep cycle
Non-invasive and safe, without stimulating the auditory system
Pink noise features
Synchronizes brain waves without stimulation
Blocks external noise for a stable sleep environment
No burden or irritation to the ears
Znie uses pink noise only during the sleep onset stage, helping you fall asleep faster and more comfortably.
Pink noise is a natural, soothing sound that helps calm the brain for faster and deeper sleep.
Verified effectiveness of ELF
A study on improving insomnia and its emotional effects.
Sleep quality improved by 90%, emotional stability improved by 78%
Scores before and after use by assessment tool (mean ± SD)
| Category | Assessment tool | Before use | After use | Effect | |
|---|---|---|---|---|---|
| Improvement in Insomnia | Pittsburgh Sleep Quality Index (PSQI) | 7.9 ± 3.6 | 5.5 ± 2.5 | Improved sleep quality | |
| Epworth Sleepiness Scale (ESS) | 8.5 ± 3.6 | 5.5 ± 3.4 | Reduced daytime drowsiness | ||
| Fatigue | 45.2 ± 9.1 | 33.9 ± 15.1 | Improved sleep quality | ||
| Insomnia Severity Index (ISI) | 11.9 ± 5.6 | 7.3 ± 3.8 | Symptom relief | ||
| Emotional Effects | Patient Health Questionnaire-9 (PHQ-9) | 4.7 ± 4.6 | 2.0 ± 1.9 | Decreased depressive mood | |
| Geriatric Anxiety Scale (GAS) | 3.1 ± 2.1 | 1.8 ± 1.9 | Decreased anxiety | ||
| Sleep Quality | Sleep Assessment Questionnaire (SAQ) | 6.1 ± 4.5 | 3.1 ± 2.5 | Improved sleep quality |
- Pittsburgh Sleep Quality Index (PSQI)Improved sleep qualityBefore 7.9 ± 3.6After 5.5 ± 2.5
- Epworth Sleepiness Scale (ESS)Reduced daytime drowsinessBefore 8.5 ± 3.6After 5.5 ± 3.4
- FatigueImproved sleep qualityBefore 45.2 ± 9.1After 33.9 ± 15.1
- Insomnia Severity Index (ISI)Symptom reliefBefore 11.9 ± 5.6After 7.3 ± 3.8
- Patient Health Questionnaire-9 (PHQ-9)Decreased depressive moodBefore 4.7 ± 4.6After 2.0 ± 1.9
- Geriatric Anxiety Scale (GAS)Decreased anxietyBefore 3.1 ± 2.1After 1.8 ± 1.9
- Sleep Assessment Questionnaire (SAQ)Improved sleep qualityBefore 6.1 ± 4.5After 3.1 ± 2.5
The study showed significant overall sleep quality improvement and a statistically meaningful (P<0.05) reduction in insomnia severity. Importantly, it also demonstrated emotional improvements, such as reductions in depression and anxiety.
Lower scores indicate milder symptoms. Bars compare each score relative to its before-use value.
Recommended for
Znie is not just a simple sleep aid device. It's a smart sleep partner that transforms your nights through scientific technology. Starting tonight, fall asleep comfortably, naturally, and deeply with Znie.
01
02
03
04
05
Specifications
Znie is more than a simple sleep aid. It's your sleep routine partner that enhances your quality of life.
Product name
Znie (S-300)
Input
DC 5V, 1.5A
Size
122 x 140 x 115 mm
Weight
500 g
Material
ABS, PC
KC cert.
R-R-Hny-S-300
Country of manufacture
Made in Korea
Manufacturer
HONEY IT INC.

Certification
Tap a certificate to view it larger, then zoom in for details.
- Patent RegisteredNo. 10-2169133
Tonight, may you enjoy a peaceful sleep with Znie.







