For DP3400, DP3600, DP4400, DP4400e, DP4600, DP4600e, DP4800, DP4800e, DP3401, DP3601, DP4401, DP4401e, DP4601, DP4601e, DP4801, DP4801e. Genuine Motorola PMMN4040A IMPRES Remote Speaker Microphone. Price is for one remote speaker mic.
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