When I was choosing headphones, I couldn’t understand if the fins were interchangeable, because some of the photos have them, but others don’t - I thought they were different versions of the headphones. In fact, the arms are interchangeable - two pairs with fins (more and less) and one pair without them are included. Personally, the fins put pressure on my ears, but discomfort is not felt immediately, but after a few hours - it’s as lucky as everyone’s ears are different. But with fins, the headphones stay in the ears better (although without them, the headphones themselves do not fall out). In general, I am satisfied with the purchase, but I take off half a point for insufficient bass.
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