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Pressure both in people’s lives and job time increases day and day. This loudspeaker is designed specially for consumers to vent and compression. The speaker housing with speaker holes are made of memory foam. When you feel uneasy, you can turn it on to listen music and then hit it to vent you pressure. At the same time, because the size and the shape of the speaker hole were all changed, the sound of the music will become smaller and more sharpened. It is very interesting.