The Kenwood KMC-21 Industrial Grade Speaker Microphone is used in security, warehouse, supervisor and other positions where you need to be in touch quickly. Use the KMC-21 speaker microphone to make your business more productive. This black microphone works with Kenwood's TK and ProTalk series radios and features a volume control, remote control, and channel scan. The KMC-21 compact speaker microphone is splash proof with a swivel belt clip. This microphone can be used with the KEP-2 earpiece.