Is the OOP program done correctly in JS?

Question

JavaScript

I recently started learning and chose the JavaScript language for myself. I made a timer for the landing page using the OOP concept in the javaScript style.

The question is the following.
Is the program written correctly using OOP in this language? Please give your criticism if something is wrong and also your suggestions for me will be very useful. Please do not throw literature on OOP, but simply give an assessment. Thank you!

Link: https://codepen.io/nakalexey/pen/WdXZPM