***** **********Best Quality Guranteed. *****The earpiece is made of durable PU material*****With this radio earpiece that includes a state-of-the-art, in-line PTT microphone, its easier than ever to use your radio device for hands-free communication No distortion, attenuation or frequency jumps*****Ear bud style earpiece with built-in line microphone; covert acoustic tube transmits more clear sound*****The standard 2.5 mm pin with electroplating anti-oxidation design, avoid the poor contact situation, effective to improve the life of the headset*****The 1 pin 2.5 mm plug earpiece compatible with motorola T100 T260TP MH230R MD200R MR350R MS350R or Hytera TC310 TC320 TC1600 TC1688 two way radios