Motorola PMLN4620a compatible over the ear listen only earpiece features a coiled cord and 3.5mm right angle unthreaded plug for remote microphones. Mutes the sound from the remote speaker-microphone providing discreet incoming messages. Ideal for noisy environments. Also called a D-hook receive only ear piece, this accessory has a short cable and is designed to plug in to the head of the microphone when it is at or near your shoulder. Often used as receive only for police radios. Features: ; Will mute speaker on remote speaker microphone ; Fits on outside of the ear providing exceptional comfort ; Increase security and reduce noise by adding a Waveband listen only ear piece to your shoulder microphone ; Right angle plug connector fits compatible with all remote speaker microphones that include a 3.5mm plug. ; 3 year warranty against manufacture defects Compatible with the Motorola PMMN4051, PMMN4045, RMN5038, RMN5067, RMN5089, RMN5072, RMN5073, RMN5074, PMMN4013, PMMN4021, PMMN4022, PMMN4062, PMMN4059, PMMN4060, PMMN4061 Remote Speaker Microphones For use with the following Motorola portable two-way radios: APX 7000, XTS5000, XTS3500, XTS3000, HT1000, PR1500, MT1500, MTS2000, XPR6300, XPR6350, XPR6500, XPR6550, HT1250, HT1550, HT750, MTX8250, MTX8250LS, MTX850, MTX850LS, MTX9250, MTX950, PR860, EX500, EX560XLS, EX600, EX600XLS, BPR40, CP110, CP150, CP185, CP200, PR400 Fully equivalent to Motorola PMLN4620A/PMLN4620A