Universal 3.5mm Plug Throat Mic Air Tube Covert Earpiece Headset For iPhone 5 4S 4G 3GS 3G Samsung Galaxy Note 2 II S3 SIII S2 SII N7100 i9300 etc Specifically designed for you to keep away from phone radiation. 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. The throat mic could be easily hidden under the collars too. This headset is for use with the almost phone with 3.5mm plug,except Nokia and Sony Xperia, as far as we know.