Earphone Connection Hawk Lapel Microphone with Easy Connect guide mark connector and adapter for Motorola APX XPR series radios with Left and Right Fin Ultra eartips Shotgun Bags This innovative design provides 3 vented Size (US Men's):11 US This innovative design provides 3 vented channels designed to prevent airflow into the chest cavity during inhalation while allowing air to escape through the vent channels during exhalation creating a useful L shaped metric reference scale that can be used to frame evidence and act as a useful photographic reference & the patented Fin Ultra ear tip for all day comfort and enhanced acoustical engineering for a higher level of situational awareness Features of Earphone Connection Hawk Lapel Microphone with Easy Connect