MAXTOP APM290IA-M9 IP65 Waterproof Shoulder Speaker Microphone for Motorola XPR-6500 XPR-6550 XPR-6580 With Smart Audio feature, it is automatically adjust the volume even you're not directly speaking to the microphone. This provides consistent output for user IP65 Heavy duty water proof speaker microphone for two way radio. Easy smooth feel PTT and clear voice quality. With durable 360 degree metal back clip. Vigorous, rugged and adaptable designed for tough working environments.