Motorola RM Series: RMU2040, RMU2043, RMU2080, RMU2080D, RMV2080, RMM2050. New Motorola 56517(HKLN4599) Earpiece for CLS, DTR, RDX, Spririt or XTN Two-Way Radios. HKLN4599 Earpiece with Inline PTT Microphoneis compatible with the following Motorola Two Way Radios.
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