1. Applicable to BAOFENG/Quansheng walkie-talkie 2. No need to hold the radio to talk and listen at all times, easy to use 3. Number of pins: 2 pins 4. Applicable to nightclubs, bars, paintball, security, restaurants, hotels, airports, casinos, manufacturing plants, conferences, concerts, warehouses and noisy environments 5. Clear sound performance, concealed and convenient
