Tenq Professional Tactique Military Police FBI Flexible Throat Mic Microphone Covert Acoustic Tube Earpiece Headset With Finger PTT for Kenwood Pro-Talk XLS TK Two Way Radio 2pin Double PTT design----Big square Waterproof PTT and rounded PTT makes the earpiece is very easy to use.And also can suit for complex the harsh environment. The covert acoustic tube earpiece has solid construction and firm PTT button. the connections of the separate parts use a strong metal and plastic twist connection. Specifically designed for demanding tasks in paintball / airsoft setting. It is also widely used in discreet communications. Since the microphone transmits directly from your throat, it is not sensitive to the background noise. This is exceptionally ideal for usage in high ambient environment such as driving, riding motorcycles and bicycles. Supper Large Armpit PTT. 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.