Question about Garmin Venu X1

Hello dear Galaxians. At the top of the list of health functions it says ECG. However, I cannot find this function anywhere on Garmin. On my Venu 3, this feature was "retrofitted" via a software update and works thanks to the metal ring on the bezel. The X1, on the other hand, doesn't have this... This function is a killer criterion for me and I would therefore be very grateful if you could clarify this for me. Thank you very much !