Bigstone 1 Pin Covert Acoustic Tube Earpiece Headset for Motorola COBRA Talkabout Walkie Talkie Two Way Radio 1pin (2Pack) 1pin Clear Acoustic Tube Covert Earpiece Earphone Headset PTT(Push To Talk) with built-in line mic microphone for Motorola COBRA Talkabout Walkie Talkie Two Way Radio Bodyguard FBI Security Door Supervisor. Clip 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. Ideal for demanding covert security applications where sound clarity and earpiece durability are of paramount importance. Excellent for use in police, military, nightclubs, bars, paintball, security, restaurants, hotels, bouncer, warehouses, and noisy environments.