Motorola RM Series: RMU2040, RMU2080, RMU2080D, RMV2080, RMM2050. Qty 4 New Motorola 56517 Earpieces for CLS, DTR, RDX, Spririt or XTN Two-Way Radios - now known as the HKLN4599. HKLN4599 Earpiece with Inline PTT Microphone for is compatible with the following Motorola Two Way Radios.
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