Coodio Tactital Behind-the-Head Earpiece Headset Mic [Boom Microphone] [Noise Cancelling] For 1 Pin Uniden 2 Way Radio Walkie Talkie Coodio's 1 pin Uniden FRS/GMRS two way radio behind-the-head earpiece headset is optimized for communications intensive environments in which personnel need to interact with customers while maintaining radio communications. Adjustable boom noise cancelling microphone with finger PTT(Push To Talk) will give you the best radio communication experience while on the move. Provides high quality audio, easy-to-use functions and all-day comfort. Excellent for user in police, military, nightclubs, bars, paintball, security, restaurants, hotels, bouncer, warehouses, party, building construction, stage, studio, hunting, outdoor and noisy environments. ONLY compatible with 1-Pin Uniden FRS/GMRS walkie talkie 2 way radio inlcuding Uniden GMR325, GMR635, GMR638, GMR1038, GMR1235, GMR1635, GMR1636, GMR1639, GMR1838, GMR2035, GMR2050, GMR2089, GMR2238, GMR2240, GMR2638, GMR2838, GMR2889, GMR3040, GMR3050, GMR3055, GMR3689, GMR3699, GMR3740, GMR3799, GMR4040, GMR4055, GMR4060, GMR4088, GMR4099, GMR5088, GMR5089, GMR5095, GMR5098, GMR5099.