Having only been able to use vacuum headphones for about an hour before my ears started to push them out, I decided to give these a try. These are flawless and without flaw. Actually, the headphones produce a vacuum-like sound (similar to the Galaxy Buds +, but with a stronger bass) without being uncomfortable to wear for long periods of time (I've been using them for 5-8 hours a day for a month) or isolating the listener from their surroundings (ideally you hear people, signalization of cars, etc.), but they also provide adequate isolation if desired.
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