Jaeger-LeCoultre

I don' exactly know when the Lecoultre E 2644 was made, but my guess is that only a few years, maybe 4 or 5, separates it to the 2648. The E 2644: And the 2648. Despite that, the style of these 2 is very different, one being more classic, the other being ...  

But they feel worlds apart. Fun, both

Do you know what size they are ?

I like the E 2644, beautiful dial