Swiper in different devices

Hi all!

Just trying to create a full width, 60vh height background swiper. So that in PC wold be fine a standard fullHD size, but for vertical devices it would be an almost square space. If I set the images as responsive, they are shown too small, if not, just too big.
Is there a way to use a "cover"or “contain” atribute over the swiper slides? Or maybe use different images for different devices?

Cheers!