... sensititive for discreet communication http://www.huari-battery.com/ Interphone earphone HRE-3321 with PTT&VOX switching ,high quality earpieceWalkie ... Icom,Yaesu,etc. Clear and discreet earhook with excellent durability,reliabilityWhitch is with raebud,earhook,push to talk and plug,VOX ... ,also with excellent audio reproduction and robust constructionVarious of earhook and plug ,PTT for your choice.