ProMaxPower 1-Wire C-Shape Swivel Earpiece with PTT Mic for Motorola Two-Way Radios XPR3000, XPR3300e, XPR3500e, DP3441, DEP550, MTP3550, XiR-P6620, XiR-P6628
FBI Earpiece Headset Mic for Motorola MTP3550 MTP3250 MTP3100 MTP3200 MTP3500 | eBay
Mag One Swivel earpiece - SEI Wireless Solutions
Acoustic Tube Earpiece Headset for Motorola MTP3550 MTP3100 MTP3200 MTP325 Radio | eBay
Motorola MTP3550 TETRA Portable Two-Way Radio – XUNERS Two-Way Radio Specialist
Auricular para Radio SIRESP Motorola MTP3100 / MTP3150 / MTP3200 / MTP3250 / MTP3500 / MTP3550 | TouchFire®