The Hytera EH-02 is a receive-only swivel earpiece that has 3.5mm connector. It is intended to work with these Hytera PTT/Mic cables: ACM01, ACN01, ACN02 and ACS01. This earpiece works with the following Hytera portables: BD302i, BD502i, BD552i, BD612i, PD362i, PD402i, PD482i, PD502i, PD562i, PD602i, PD662i, PD682i, PD7 iSeries, PD982i, X1i Series, PDC760. One year manufacturer's warranty.