DEFENDER MEDIUM-DUTY LAPEL MICROPHONE w/D-Shape Ear Hanger. The D ring fits over the ear to hold earpiece in securely in place. Patented swivel design can be used on either ear.
Fits older Vertex radios with multi-pin connector (note: NOT compatible with VX-537 or NYPD models) including: VX-310, VX-500, VX-510, VX-520, and VX-520UD.
