Code Red Signal 21-K Public Safety Speaker Microphones with 3.5 mm port for Kenwood Radios NOISE CANCELLING - Reliability is crucial out in the field. Know that the person on the other end heard you loud and clear, without all the background static. TOUGH AS NAILS - The Signal 21 microphone has been manufactured using the highest quality specifications to be water, wind dust and impact resistant. The radio connector cord includes a strand of Kevlar to insure durability and reliability. The heavy-duty strain relief means longer service and less down time. LIGHTWEIGHT - At only 3.6 ounces, the Signal provides tremendous durability and fits perfectly into the palm of your hand. It stays put thanks to the sturdy swivel metal clip that can be attached in any position of your clothing or tactical vest. CODE RED QUALITY - We know theres many choices of radio gear available, but you can be confident that our equipment stands out above the rest. When Code Red gets called out, get the message with Code Red Headsets. 1 YEAR WARRANTY - We believe in our products, and we know they work as hard as you do. Thats why we include a 1-Year Warranty on everything Code Red.