All these suck so badly compared to the last Panasonic I had. Japanese portable cassette players were incredible pieces of engineering. They were more a wrapper around the cassette than a player that you inserted the cassette into, with elaborate mechanical designs for bi-directional playback, auto skipping, etc.
I had this one, black
https://walkman.land/panasonic/rq-s55
The design was amazing, Apple designs of that time. Extremely slim and I can still recollect the tactile feeling of closing the lid.
I felt like a king owning one.
I preferred my Japanese Mini-Disc player. 240hrs of play time on one charge
All these devices use the same exact mechanism from the last factory in the world making cassette mechanism. Of course, the last factory is not the one that was making the high quality stuff with all the noise reduction technology; the last holdout is the cheapest mechanism there ever was. It's bulky and can't even take advantage of any noise reduction tech.
A banged up old cassette player from Sony will produce higher quality sound than a brand new mechanism.