GoodQbuy&reg; Surveillance Covert Acoustic Tube Earpiece Headset for Icom 2 PIN Walkie Talkie Radio F3G F4G F11 F11S F14 F14S F21 F21S F24 F24S Transparent vacuum pipe makes the microphone covert and comfortable to wear. Dual-core structure with microphone, PTT button and removable vacuum pipe facilitates a covert communication in complex circumstances. The eco-friendly PU wire is made of tensile vectran fiber, which is sturdy and durable. Proper soft ear hanger can be chosen to offer best wearing without hearing affected by surroundings. It is commonly used by patrolman, detective, security guard, escort and other security professionals.