The Kenwood KMC-45 MIL-SPEC IP54/55 Speaker microphone provides a good level of audio output, in addition to voice clarity when receiving and transmitting. This unit is the replacement for the KMC-17. This heavy duty speaker microphone with built-in 2.5mm miniature earphone jack is one of the best Military Spec Remote Speaker Microphone on the market and at a great price. Heavy duty speaker microphone with a 2.5mm (listen only) miniature earphone jack comes with a swivel clip. The KMC-45 from Kenwood is a heavy-duty speaker microphone, ideal as a companion for mobile radio applications. The microphone is MIL-SPEC IP54/55 rated for water and dust intrusion to ensure a long and reliable lifespan. This microphone can be used with the KEP-2 earpiece.