Sleep Breathe

Making breathing "visible"

Equipped with medical-grade sensors, the Sleep Apnea Monitor accurately monitors all aspects of sleep.

Comprehensive Sleep Monitoring

The Sleep Apnea Monitor allows you to monitor, manage, and improve your quality of sleep at home.

By syncing device data to the app, you can view sleep data in real time and obtain a detailed and professional sleep quality report.

Real-time Monitoring

Monitoring of breathing

and snoring.

Easy to Use

Simple design with one-key

power on/off and automatic activation.

Accurate Data

Equipped with medical-grade sensors

for accurate monitoring.

Breathable and Comfortable

Made from lightweight food-grade
TPU silicone material

for high-quality comfort.

Real-time Monitoring

of Sleep Apnea

Equipped with advanced monitoring technology and VVFLY's proprietary algorithm, the Sleep Apnea Monitor monitors your breathing in real time and accurately evaluates the risk of sleep apnea (up to 95% accuracy based on test data).

Smart Snore Monitoring

Snoring can be a sign of sleep apnea, a condition which may pose a significant risk to your health and requires constant monitoring. The Sleep Apnea Monitor implements VVFLY's proprietary algorithm to intelligently detect snoring and provide comprehensive analysis of data.

Sleep Cycle


Medical-grade sensors accurately monitor various aspects of sleep, including your sleep cycle (duration awake, duration of deep sleep, and duration of light sleep) and sleeping position. The SleepBreath app also provides personalized tips on how to improve your quality of sleep.

Ergonomic Design

Ergonomically designed to fit the human face, the Sleep Apnea Monitor is made of food-grade silicone material and comes with three different sized straps to provide ultimate comfort.

Accurate Monitoring

Equipped with specialist biomedical sensors that monitor breathing in real time, the device collects and analyzes your airflow to detect changes in respiratory data

with up to 95% accuracy when compared with the PSG standard used in the medical industry

SleepBreath App - Making Breathing "Visible"

Download app  〉

Comprehensive monitoring Respiratory monitoring
Snore monitoring Record and track changes in snoring.
Respiratory monitoring:View respiratory data, including time, frequency, and duration of respiratory events.
Sleep monitoring
View detailed analysis of your sleep cycle to gain insight into your sleep.
View personalized tips on how to improve your quality of sleep based on the collected data.
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Health Management

Accurate monitoring of various data paves the way to healthy sleep.


Sleep Apnea Monitor

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Model: YS21
Dimensions: L29.5mm x W24.5mm x H12mm
Weight: 18.5g
Monitored data: Respiratory airflow temperature
Operating temperature: 5℃~50℃
Material: Medical-grade silicone
Battery capacity: 3.7V/55mAh
Device compatibility: iOS 8.0 or above, Android 4.3 or above
Package contents: Main Component*1、Charging cable*1、User Manual*1、Quick Start Guide*1、Straps*2