According to a recent press release, the Lemfofit Lem 3 smartwatch has an ECG tool, which is certified by the CFDA. However, a lack of explanation means the accuracy of these measurements remains to be determined. The wearable also allegedly has non-invasive blood glucose tracking, Bluetooth calling and a voice assistant. https://www.notebookcheck.net/Lemfofit-alleges-new-Lem-3-smartwatch-has-ECG-certification.807236.0.html
I reckon apple-legal will want to have a word with this company if this is sold anywhere with laws protecting designs...