A palm-held microphone with integral pre-amplifier and high quality ECHO circuitry. The echo circuitry uses a special design in order to give excellent results, unrivalled by any other microphone. The pre-amplifier and echo repetition adjustments are housed inside the body of the microphone whilst the echo level adjustment is located on the front together with the on/off "Roger Beep" switch. The microphone is powered by a standard PP3 9 Volt battery and comes fitted with a robust but flexible spiral lead, terminated in a 4 pole connector with standard connections which will fit most standard two-way radios.