Denver BTN-206 headphones, any opinions?

[gildasd]

These are sold for 34€ locally.
https://denver-electronics.com/products/audio/denver-btn-206sand/c-1024/c-1107/p-2842
I could not find any reviews positive or negative worth reading.

They are rebranded chinesium knockoffs... But tempting.
The intended use is an hour of quiet time after work in my cabin.
I am currently work on a cutter dredger and break from the low to medium low frequency noise would be nice.
This noise is generated by the drag head, water and sand in the pipes and hydraulic winches.
I avoid expensive stuff, as a bag can fall in the water during crew transfer and be massaged between two hulls before getting gaffed out of the drink...
And I could give one a trip to one of my philipino team members without breaking the bank... but I would not do that if it was really crap.

So tempted, but if they are no better than bog standard 25€ Bluetooth headphones, I’ll pass.