GoodQbuy&reg; Surveillance Covert Acoustic Tube Earpiece Headset for HYT Hytera TC-780 TC-780M TC-610P TC-3000 TC-3600 TC-3600M TC-610S TC-710 TC-880GM 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.