Motorola RM Series: RMM2080, RMU2040, RMU2080, RMU2080D, RMV2080, RMM2050. Motorola DTR Series: DTR410, DTR550, DTR650. Formally Motorola RLN6423 Earpiece Flexible Swivel Earpiece. MotorolaHKLN4604 Lightweight Swivel Earpiece W/ PTT Microphone New.
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