Medical-Grade Blood Oxygen Monitoring Wristband
Soosyn ST-50

Soosyn ST-50
The Soosyn ST-50 is a medical-grade wrist pulse oximeter, powered by tBPC Inside™ core technology and certified as a regulated medical device by Taiwan’s Ministry of Health and Welfare (Medical Device License No. 008494).
Unlike consumer fitness wearables, the ST-50 integrates medical-grade PPG sensing technology to deliver reliable, real-time blood oxygen (SpO₂) and pulse monitoring data. It is designed for rapid screening, clinical assessment, chronic condition monitoring, and health management, supporting professional care environments including hospitals, long-term care facilities, and home care settings.
With a slim profile of just 8.8 mm in thickness (excluding the sensing area), the ST-50 is lightweight and comfortable for extended wear. Whether during daily activities or overnight monitoring, it supports stable, long-duration data collection—making it well suited for continuous monitoring in medical and long-term care environments.
Monitoring accuracy depends on wearing stability. The ST-50 features a patented curved design combined with an adjustable, stepless wristband, allowing it to fit different wrist sizes securely. This helps reduce measurement errors caused by loosening and gives healthcare professionals greater confidence in the monitoring results.
The ST-50 supports up to 12 hours of continuous monitoring, covering full sleep cycles or nursing shifts without interruption. For long-term and home care, this enables cross-period data collection, helping clinicians track trends while reducing gaps and inaccuracies associated with intermittent measurements.
The ST-50 integrates tBPC Inside™ biophotonic technology with medical-grade PPG (photoplethysmography) sensing to accurately measure key physiological parameters, including blood oxygen saturation (SpO₂) and pulse rate.
This measurement approach has been clinically validated and is certified by TFDA, delivering data reliability that meets the requirements of clinical and professional care environments.
Using PPI (peak-to-peak interval) continuous measurement technology, the ST-50 records the time interval between individual pulse waveforms. Compared to devices that only display heart rate values, PPI enables more detailed observation of heart rhythm variations, helping reduce the risk of missed irregularities and supporting clinical evaluation.
The ST-50 works with the Soosyn Care App, synchronizing data via Bluetooth and supporting real-time alerts for abnormal readings. Healthcare professionals can monitor changes in blood oxygen and pulse data remotely and upload records to the cloud for further use in electronic medical records, remote patient monitoring, and long-term care data analysis.
View blood oxygen and pulse data at any time.
Receive immediate notifications when abnormal readings are detected.
Support centralised data management for medical and long-term care institutions.
Visualise long-term health data to support ongoing assessment.
Beyond accurate blood oxygen monitoring, the ST-50 serves as a core device within the Soosyn one-stop healthcare solution. Through its dedicated app and cloud platform, blood oxygen data can be integrated with heart rate, sleep, and activity indicators, helping healthcare providers establish a more complete and continuous health monitoring workflow.
By combining medical-grade monitoring capability with wearable convenience, the Soosyn ST-50 supports diverse healthcare applications. For medical and care organisations, it improves monitoring efficiency while expanding health management coverage in a cost-effective way.
Enable real-time blood oxygen and pulse rhythm monitoring to support clinical decision-making.
Help reduce staff workload while improving monitoring efficiency across residents.
Serve as a practical tool for employee health assessment and wellness programmes.
Support caregivers by reducing manual workload while enabling continuous monitoring for chronic conditions and long-term observation.