Listen Technologies LA-456 - Headset 6 for ListenTALK (Protective Ear Buds with Mic)Our LA 456 Headset 6 (Protective Ear Buds w Mic) is ideal for two way communication in noisy environments. The in ear design offers the noise protection of ear plugs and a built in mic for communicating, all while providing outstanding sound quality and comfort. The universal fit works for all ear sizes. Two sets of interchangeable plug tips are included (Foam or Silicone). The foam tips provide a Noise Reduction Rating (NRR) of 29 dB and the silicone