Earpiece Microphone with VOX (depending on radio used).
The VC-27 combines a miniature earpiece and in-line microphone providing discreet and comfortable control for Yaesu radios, such as the VX-7 and the FT-270.
The VC-27 may be used for VOX operation with any transceiver which has the VOX feature built-in (such as the VX-7 Tri-Band Handheld Transceiver) as well as a compatible threaded connector. The VC-27 does not have VOX circuitry built-in.
(VOX capable, depending on the radio)