Mp3 with 15sec rewind button, not fast rewind, only rewind

I have spent days trying to find an MP3 players with:

forward/rewind buttons (specific button for rewind and forward), recorder, good sound. Compatible with audible.com

I don't want big screen/video/picture display. A black and white display to show titles will do. No other features. No pictures, no nothing, no more.

Fast backward and fast forward is a bonus if as I don't really use them (not a music fan)

Does this even exist in the market? I've only seen players with too many features that I will never use, yet missing other features that any podcast fan would need.

English is my second language, so I will be using the rewind button a lot. I would like to re-listen to the last 10 or 30 seconds of a podcast just to make sure I understand the idea strong enough.

The 15 second rewind would be optimal yet podcasts in the market don't even let you set the rewind time, when you click a rewind button

A separate rewind and forward button is optimal but I doubt that feature would even exists as most companies that are creating players seem to be copying from each other.

I'm not keen on the fast forward and fast rewind buttons, I would rather not buy an MP3 with a fast rewind, but just fast forward, as a matter of fact I don't like fast rewind/forward... I'm not to keen on music either.

I'm a boring person who loves his boring scientific/social/economic podcasts. Please help this old-goof for any advice or web link on mp3 players :o)