Spovan Professional PPG and ECG Smartwatch Spovan SW12 manufacturers. Professional Smartwatch with ECG and blood oxygen sensor. ECG monitor watch equipped with PPG sensor. More than 70% of our products are exported to global market, the health assistant by your side. It si also a ECG Smart Bracelet with Sport Monitor. Different with common smartwatch, it not only monitors heart rate and blood pressure, but also monitor ECG, blood oxygen, heart rate variability and judge a variety of heart diseases.