ENDURA 1 WIRE SURVEILLANCE KIT - PTT, HY1L CONNECTOR FOR HYTERA BD502

Also Fits: BD502i, BD552, BD552i, PD402i, PD412, PD412i, PD502, PD502i, PD562, PD562i, TC-508, TC-518, TC-580, TC-600, TC-610, TC-620, TC-700. Features: Locking connector and clear audio tube. Includes spare earbud.