The Sheepdog SD-HDSM is a heavy-duty remote speaker microphone with a high impact, water-resistant, rubber sealed polycarbonate housing. This mic is designed and engineered for police, fire and EMT, utilizing the toughest of construction practices. The SD-HDSM is outfitted with a Kevlar reinforced, polyurethane jacketed coiled cable and ultra-durable strain relief. SD mic cables are military-grade and engineered to provide extended life and retain original shape. The housing allows for heavy-duty use in rugged and/or wet environments. The SD-HDSM includes a large Push-To-Talk (PTT) button which is easy to locate even while wearing gloves or during high-stress situations. The spring loaded, metal reinforced clothing clip rotates 360 degrees, allowing the user to configure and secure the mic to their uniform or tactical, load-bearing vest and body armor. The SD-HDSM is built with a premium electret condenser mic element that transmits clear, 10-2 audio. The high-output speaker is loud and produces clear receive audio. The SD-HDSM includes a top-mounted 3.5mm listen only earpiece port, allowing for private communications with dispatch or other team members. The mic cable is replaceable should your department/agency perform a fleet upgrade to a different radio model. Compatible with Tait (Harris) TP3000 TP3300 TP3550 TP8100 TP8110 TP8115 TP8120 TP8135 TP8140 TP9300 TP9310 TP9355 TP9360 TP9400 TP9435 TP9440 TP9455 TP9460 TP9600 TP9655 TP9660 two-way radios.