... . D-Loop Earphone,2-wire Ear Receiver with PTTReplacement For Motorola PMLN5271A, PMLN5271A, FTN6583, FTN6595, FTN6707, WADN4223, WADN4224, PMLN5143A, PMLN5141A ... earpiece. They are ideal when environments requirediscreet communication.Compatible with MOTOROLA TETRA MTP850, ,MTP850 EX, MTP810 EX, CEP400, MTP880 etc... We hope ... PMLN5271A D-shell earpiece with in-line PTT/Mic For MTP850, CEP400, MTP880