Douk Audio Vintage Audio Analyzer MIC Pick-up Retro - DON'T BUY IT

BEWARE OF THIS SELLER ALIEXPRESS: hwww.aliexpress.com/store/813423
I bought a Douk Audio Vintage Audio Analyzer MIC Pick-up Retro for $80, which actually works and looks like tacky plywood and a piece of plexiglass. The worst thing is that it makes horrible squeaking noises, you can't use it. Terrible workmanship - inside the device you can find pieces of dust and wood scraps. It's actually only fit for the trash can.
Does not honor warranty or exchange. The only thing he can offer you is the suggestion that you repair your devices YOURSELF.
DON'T BUY IT