https://www.jolike.com.cn/productinfo/534495.html
It's well built, sturdy, battery life is great and sound quality very good.
But...
After some use it appears crystal clear that they cobbled together parts without testing them properly, which is normal in cheap devices with no or minimal quality control. FM radio audio level is completely different from recorded music, and at minimum level (that is, 1) it is still too loud for relaxed listening in environment without loud ambient noise, and if you go from say mp3 to FM without adjusting levels be prepared to jump. Touchscreen is badly arranged: some functions are in the way (playing speed to name one) and could be activated by mistake when changing tracks. Navigation can be tedious in crowded directories because advancing by pages doesn't work as it should. Last but not least, as with many other cheap players, the preset based equalizer is a joke. That is not how a proper equalizer should work; just give me a damn graphic one but please stop that useless Jazz-Rock-Classic-Disco-etc. thing that never, ever works. Etc.
That device could have been a real gem if only they didn't ruin it with junk firmware with no way to upgrade it. Had they sent a couple free devices to the Rockbox folks plus enough technical information on the employed hardware, they would now have a real gem instead of a half assed mediocre toy.
For reference: https://www.rockbox.org/