Used Headset Earpiece Mic for Motorola DP3400/DP3401/DP3600/DP3601 Radio. with or without earpiece. Built-in Microphone: Convenient inline microphone with a push-to-talk (PTT) button for easy use. Compatible Models: Motorola DP3400, DP3401, DP3600, and DP3601 radios.
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