Features: Throat vibration conduction: avoid high-speed driving noise in the air. Transparent air duct: Convenient for concealing, and the sound is very original and clear. The coil is retractable: Convenient to use. Transparent vacuum tube earplugs: Anti-radiation, anti-fatigue. The PTT is wound around the finger to start, so you can drive and use it at the same time. Compatible with for Baofeng two-way radio (including UV-9R BF-9700 BF-A58 GT-3WP R760 UV-82WP, etc.). Specification: Type: Throat microphone Connection: Insert Use: conversion Packing: approx. 17.5*13.9*2.5cm / 6.9 * 5.5 * 1 inch Package List: 9RPLUS Retractable Throat Microphone * 1 Earmuffs * 2 Screw * 1