Works without listen to the music is very boring sometimes. But if we use the earphones, the sounds around us is muted or if we use the speaker, the effect we are going to disrupt our peers. The solution to these problems is using Soundlazer. Soundlazer is a speaker system with ultrasonic sound only be heard only by people who were right in front of him, while the addition of this device will not be able to hear the sound produced.
Currently Soundlazer still looking for funds and when it's ready to be produced will be sold at a price of around U.S. $ 25.
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