These covert acoustic tube earpieces are exceptionally durable, but still lightweight. The audio quality for this earpiece is excellent and works well in a variety of conditions. The PTT microphone housing clips securely to your vest and lies flat so it is not easily displaced and can be pressed from the front without having to grab hold of the unit. These type of earpieces are used by close protection operatives, doorman’s, security guards, covert police, store detectives, private investigators and just about any kind of undercover operation teams you can think of.<br> <br> Two wires extend from the radio connector jack, one to the acoustic tube (110 cm) and second to the PTT microphone (110 cm). This earpiece is suitable for down sleeve, under clothing operation or can be clipped near the lapel or to the vest. The two-wire earphone kit provides excellent durability, reliability and performance in low-profile environment. If you are serious about your job then this type of earpieces should satisfy your craving for the best possible quality earphones you can get your hands on.<br> <br> <b>This earpiece features a 90 day "no questions asked" money back guarantee.</b>