Does my watch support the heart ecg function? Apple watch se aluminum case

Thanks for asking about the ECG feature.

Check here for availability in your region: ECG

ECG requires the current non-beta version of iOS and watchOS. For additional help with the ECG feature on your Apple Watch, take a look at these articles.

Heart rate notifications on your Apple Watch - Apple Support

Taking an ECG with the ECG app on Apple Watch Series 4 or later - Apple Support

If you have any other questions, please reach out to our team here: https://apple.co/HeartFeatures. If you believe that you are experiencing a medical emergency, please dial your local emergency services.

Take care.

If it's an apple watch 4 or above then it does support the ECG function as long as your in the list of countries that have approved it.

Countries that support ECG app

Go here;

Taking an ECG with the ECG app on Apple Watch