KENMAX 3.5mm Jack Adjustable Volume Communication Ham Mini External Speaker for Motorola Kenwood Yaesu Midland Icom HYT Mobile Transceiver CB Radio Plug: 3.5MM Mono Jack Speaker Max Power: 3W The cable length of this external speaker up to 3 meters Compatible with Motorola Kenwood Yaesu Midland iCom HYT Mobile Transceiver CB Radio It is good for you to plug this external speaker so you can hear your radio loud and clear.