Motorola RM Series: RMU2040, RMU2043, RMU2080, RMU2080D, RMV2080, RMM2050 Motorola DTR Series: DTR410, DTR550, DTR650. Motorola CLS Series: CLS1110, CLS1410. HKLN4599 Earpiece with Inline PTT Microphone is compatible with the following Motorola Two Way Radios.
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