In this way the halter set can be executed almost invisibly under helmets. The broad and sturdy neckband offers a high degree of comfort. From the speaker with integrated microphone bone, a silicone tube leads the sound to the ear. There the sound is amplified by strengthening the natural task of the ear, and then it holds about 17 dB of individual resonance amplification in the ear canal (Open-Ear-Gain). This makes clear communication.
The large PTT 8 button is easy to operate, even in rather difficult working conditions. By default the NB 3000 will be delivered with neckband size "medium". But on request, as an alternative we offer the neckband "Small".