The Collarset is a low-profile, “one-wire” headset. The receive signal is delivered to the ear via an acoustic tube and a comfortable earpiece. This earpiece is a “non-occluding” earmold, which means it lets the user monitor the radio discretely but does not affect situational awareness. The microphone is located on the upper chest and is worn under your shirt, yet it picks up your voice, even whispers, clearly and easily. The Collarset attaches to almost any police radio. For surveillance applications, there is an optional under-arm radio harness for both your radio and Collarset.