Standard CMP-460 Speaker MicMeet the Standard CMP 460 Speaker Mic a rugged, submersible microphone built to keep radios performing under demanding conditions. Its compact, hands free design provides clear audio and dependable one handed control when you need it most. Submersible Design: Protects your communications in wet, dusty, and challenging conditions so you stay connected on the move. Broad Radio Compatibility: Works with a wide range of handheld VHF radios including