Potente micrófono de error de audio espía UHF con rango de batería recargable de hasta 700 m
You can use any UHF walkie-talkie (400-470MHz) as a receiver. To conserve battery power, the microphone is equipped with a switch. To turn the microphone on, move the switch to the "ON"position. Antenna Length: 15 cm (discreet design).