Astra Radio Communications is a Radio Accessory Manufacturer of Microphone/Headset Equipment used for Portable Two-Way Radios. We specialize in microphone equipment for Law Enforcement Officers. In particular: Water Proof Speaker Microphones, Throat Microphones, Surveillance Kits, and Heavy Duty over the Ear Dual Muff Headsets. We have pioneered the best possible Noise Canceling products.