Motorola 53724 Remote Speaker Microphone (Black) Compatible with T8500, 9500 and EM1000 series Talk and listen without handling your two-way radio Single pin and boom microphone Clips onto lapel or jacket for convenient use Push to talk (PTT) button Compatible With Talkabout Radios (T8500/9500/Em1000 Series) Clips Onto Lapel Allows You To Talk Without Holding Radio