The PRYME FUN-1 is a handheld speaker microphone that makes operating your radio easier. You can key your transmitter, talk, and receive without ever touching the radio. A clip on the back of the unit rotaes a full 360 degrees. For privacy, the FUN-1 has a built-in 3.5mm jack for an earphone (not included). Additionally there is a switch on the rear of the unit that locks the PTT switch for handsfree VOX operation (if your radio has that feature).