AOER Advanced Nipple Covert Acoustic Tube Bodyguard FBI Earpiece Headset Mic for Kenwood Puxing Wouxun Hytera Two Way Radio 2pin Advanced Nipple Covert Acoustic Tube Bodyguard FBI Earpiece Earphone Headset PTT(Push To Talk) with built-in line mic microphone for Kenwood Wouxun Puxing Hytera Radio Bodyguard FBI Security Door Supervisor 2pin. Almost All with a two pin plug, former pin diameter of 3.5 mm and 2.5 mm in diameter after pin, double pin from 8 mm within, 11 mm center distance of 2 pinClip this hands free earpiece onto your shirt and begin using your radio device to communicate discretely and easily, whether you're in security, retail, or hospitality. Nipple Style makes it more comfortable to wear, better materials and components made earpiece and PTT allows longer time use. Ideal for demanding covert security applications where sound clarity and earpiece durability are of paramount importance. Excellent for use in FBI, Bodyguard, police, military, nightclubs, bars, paintball, security, restaurants, hotels, bouncer, warehouses, and noisy environments.