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BMC Medical PolyWatch

Portable Sleep Monitoring for Children Without Unnecessary Cable Constraints

Monitor respiratory, cardiovascular, movement, position, and oxygenation data with the PolyWatch YH-S900B or YH-S900C for professional interpretation in home or clinical settings.

Children aged 6+ or ≥20 kg Home and clinical settings Professional interpretation required

Quick definition

What Is Portable Sleep Monitoring for Children?

Portable sleep monitoring for children uses a wearable and sensor-based diagnostic system to record multiple signals during sleep. BMC Medical PolyWatch YH-S900B and YH-S900C are designed for adults and children aged six years and above, or users weighing at least 20 kg, in home or clinical sleep-monitoring settings. They collect data for review by a qualified healthcare professional; they are not consumer sleep trackers and do not independently diagnose a condition.

For related information, explore pediatric sleep monitoring and BMC Medical’s broader sleep diagnostic devices.

Product overview

Two Portable PolyWatch Systems for Multi-Parameter Monitoring

The YH-S900B and YH-S900C share a broad monitoring foundation, while the YH-S900C adds five-lead ECG and WiFi data transmission. Select the configuration according to the current product documentation, intended use, and professional requirements.

BMC Medical SC3 Portable Sleep Diagnostic System

PolyWatch YH-S900B

A portable multi-parameter sleep diagnostic system with Bluetooth wireless data transmission and local data reading support. ECG is not included in this model according to the supplied comparison information.

Bluetooth Portable monitoring Local data reading
BMC Medical Portable Sleep Diagnostic System

PolyWatch YH-S900C

A portable system with Bluetooth and WiFi data transmission, local data reading support, and five-lead ECG. WiFi and ECG claims apply only to the YH-S900C.

Bluetooth and WiFi Five-lead ECG Local data reading

What You Get

The PolyWatch systems are designed around practical data collection, portable use, and professional review.

Capture respiratory, cardiovascular, movement, position, and oxygenation signals in one monitoring workflow.

Support portable use through a dual-host configuration designed to distribute equipment weight.

View device information on a wrist-worn color touchscreen with swipe navigation and simplified buttons.

Adjust screen brightness and choose left- or right-hand wearing options.

Monitor continuously for at least 16 hours after two hours of charging, according to the brochure.

Enable qualified professionals to interpret recorded results rather than relying on an independent device diagnosis.

For families and care teams considering next steps, sleep apnea evaluation should always be discussed with a qualified healthcare professional.

How It Works

Step 1

Prepare the system

A qualified care professional selects the appropriate configuration and prepares the sensors for the intended monitoring session.

What the user sees: A compact wearable system and connected sensors ready for use.

Step 2

Record during sleep

The system records the supported respiratory, oxygenation, cardiovascular, movement, and position parameters during sleep.

What the user sees: Wrist-worn status information with a hidden breathing light.

Step 3

Review the data

Recorded information is transferred or read locally according to the model and then interpreted by a qualified healthcare professional.

What the user sees: Data prepared for professional review, not an automatic diagnosis.

Features (Grouped)

Core workflow features

  • Record pressure airflow and airflow waveform.
  • Monitor pressure snoring, chest breathing, and abdominal breathing.
  • Measure blood oxygen, pulse rate, and pulse wave.
  • Capture ambient light, body position, and body movement.
  • Support CPAP pressure monitoring.

Reliability & control

  • Use medical-grade sensors and high-precision algorithms.
  • Apply respiratory inductance plethysmography for chest and abdominal motion detection.
  • Use two chest and abdominal belts for breathing monitoring.
  • Use a metal Luer connector designed to reduce airflow-tube breakage or detachment risk.
  • Choose screen brightness and left- or right-hand wearing options.

Integrations & export

  • Transmit data through Bluetooth on YH-S900B and YH-S900C.
  • Use WiFi data transmission on YH-S900C.
  • Read data locally on both listed configurations.
  • Access five-lead ECG monitoring on YH-S900C.
  • Confirm current connectivity and configuration details before use.

Proof (Results / Social Proof)

  • Both PolyWatch systems are presented for adults and children aged six years and above, or users weighing at least 20 kg.
  • Two hours of charging supports at least 16 hours of continuous monitoring, according to the brochure.
  • The YH-S900C brochure specification includes five-lead ECG and WiFi data transmission.
  • The brochure states that the product won a 2026 iF Industrial Design Award; confirm the exact award-category wording before publication.
  • BMC Medical reports more than 3 million PAP devices and over 10 million masks sold worldwide as of January 31, 2025.

“The system is presented around comfortable wearing, convenient operation, high-precision monitoring, functional flexibility, and compact, modern design.”

BMC Medical PolyWatch brochure description

Learn more about respiratory health solutions and professional sleep monitoring from BMC Medical.

Comparison (Why BMC Medical vs Alternatives)

The source information supports a direct comparison between the two listed PolyWatch configurations. Specific competitor product specifications were not provided, so they are not inferred here.

Decision factor BMC Medical YH-S900B BMC Medical YH-S900C Other alternatives
ECG Not included Five-lead ECG Not specified in source
Wireless transmission Bluetooth Bluetooth and WiFi Not specified in source
Local data reading Supported Supported Not specified in source
Monitoring foundation Multi-parameter sleep monitoring Multi-parameter sleep monitoring Not specified in source

Credentials & Key Stats

20+

Years of respiratory healthcare industry experience

140+

Countries and regions where products are trusted

3M+

PAP devices sold globally

942

Global patents reported by BMC Medical

BMC Medical reports U.S. FDA, European CE, and China NMPA certifications among its regulatory credentials. Product availability and configurations may vary by country or region.

FAQs

Is PolyWatch suitable for every child? +

The supplied materials present YH-S900B and YH-S900C for children aged six years and above or users weighing at least 20 kg. Do not claim suitability below that age or weight threshold without confirmation from the current instructions for use. A qualified healthcare professional should determine whether the system is appropriate for a particular child.

Which PolyWatch model includes ECG? +

Five-lead ECG is listed for the YH-S900C. ECG is not included in the YH-S900B comparison specification. Confirm the current product documentation and regional configuration before selecting a model.

Does the system diagnose sleep apnea automatically? +

No. PolyWatch records sleep-related respiratory, cardiovascular, movement, position, and oxygenation data for professional interpretation. It should not be described as a consumer sleep tracker or as a system that independently diagnoses a condition. Results must be reviewed by a qualified healthcare professional.

Can PolyWatch be used at home? +

The source materials present both systems for home sleep-monitoring settings as well as clinical sleep-diagnostic settings. Home use should follow professional instructions, the current instructions for use, and applicable local requirements. Availability and configurations may vary by country or region.

How does data transmission differ between YH-S900B and YH-S900C? +

The YH-S900B is listed with Bluetooth wireless data transmission and local data reading support. The YH-S900C is listed with Bluetooth and WiFi transmission as well as local data reading. Confirm connectivity options in the current regional product documentation.

How can I get current product information or support? +

Contact BMC Medical at intl@bmc-medical.com or use the company’s service and support resources. Ask about current intended-use language, regional availability, accessories, connectivity, and instructions for use. An authorized local distributor may also provide country-specific information.

Choose a portable monitoring pathway built for professional review.

Contact BMC Medical to confirm the appropriate PolyWatch configuration, current intended use, and regional availability.

Medical information notice: This page provides general product and educational information only and is not a substitute for professional medical advice, diagnosis, or treatment. Sleep-monitoring results should be reviewed by a qualified healthcare professional. Product availability, configurations, accessories, connectivity options, and specifications may vary by country or region.