Clear sound!! Handheld radio earpiece 1. Quick disconnect earphone adapter 2. Low-profile, flexible, 3. K,I, S.... Connector ... radio earpiece TC-801-2Features:·Litghtweight earphone, rubber eartip, radio connector.·Quick disconnect earphone adpater for easy replacement of any ... :200Hz-20KHz Sensitivity :103dB+/-3dB We can supply the earphone with the following different connectors,so pls tell me what ...