Sheepdog Extreme Noise Cancelling (NC) heavy duty speaker microphone with rugged polyurethane-jacketed microphone cable, strain relief and an impact-resistant, rubber sealed, polycarbonate housing. Built for a long lifespan of heavy-duty use. It has a large Push-To-Talk switch on the side of the mic, and extends over the top, which allows it to be pushed easily while wearing gloves. Spring loaded metal reinforced clothing clip rotates a full 360 degrees, allowing the user to wear the mic securely with most types of uniforms. High quality electret condenser-style microphone element for clear transmission. Powerful speaker that provides ample sound. For added privacy, the microphone has a 3.5mm earphone jack for listen-only earpieces. Professional quality, water-resistant, remote speaker microphone. Non-slip grips. Replaceable cable with waterproof connector. Compatible with Motorola APX 1000, APX 2000, APX 3000, APX 4000, APX 4000XH, APX 5000, APX 6000, APX 6000LI, APX 6000XE, APX 7000, APX 7000XE, APX 8000, APX 8000H, APX 8000HSRX, APX 8000HXE, APX 8000XE, APX 900, SRX 2200, XiRP8200, XPR 6000, XPR 6100, XPR 6300, XPR 6350, XPR 6380, XPR 6500, XPR 6550, XPR 6580, XPR 7000, XPR 7000E, XPR 7300, XPR 7350, XPR 7350E, XPR 7380, XPR 7380E, XPR 7500, XPR 7550, XPR 7550E, XPR 7580, XPR 7580E two way radios.