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Specially designed for you to keep away radiation from your mobile phone. Built in push to talk button, make you easily answer the phone without even touching your phone. With the best quality transparent acoustic tube that could hardly be detected by people around you, this is also ideal for surveillance purposes and security at airports, casinos, crowd control at conventions and concerts, and other working environment requiring discreet communications. With the best quality transparent acoustic tube, which could hardly be detected by people around you, this is also ideal for surveillance purposes and safety on flights, casinos, crowds control at congresses and concerts and other working environments require discreet communication.