[wandermaybe]

it's the aluratek LIBRE 7" Color

the exact words on their site is:

eBook support: EPUB, PDF, TXT*, FB2*
Audio support*: MP3, WMA, WAV, OGG

*non DRM

In the user manual available at the site, it says:

AEBK07FS supports books in epub, pdf, and txt format.

and

Media File Format supported
Ebook: epub, pdf, txt, fb2
Audio: mp3, wma, wav, ogg, aac

and

Adobe Digital Editions (ADE) is required for downloading DRM content
into AEBK07FS

I don't know what details are helpful to figure this out, but those were all the ones that looked possibly relevant.

I would have posted it at the brand specific thread but didn't see one for aluratek or libre.