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 Kevlar reinforcement in the cord. The heavy-duty strain relief means longer service and less down time. This speaker microphone is made to withstand all types of use; public safety and wild land firefighters. It has a sturdy swivel metal clip that can be attached in any position on your clothing or tactical vest. A covered 3.5 mm audio jack allows conversations to be diverted directly to your ear using any of our listen only earpieces. Lightweight at only 3.6 ounces, yet provides tremendous durability and fits perfectly into the palm of your hand. The Silent Jr. 3.5 Pack and the Tango Jr. 3.5 are great accessories for this product.