IMPRES 3-Wire Surveillance Kit with translucent tube, programmable button, black. Take surveillance operations to the next level with surveillance kits that allow you to transmit and receive discreet communications. These kits feature a streamlined design and durable, rugged cables that withstand tough working conditions. A quick-disconnect, durable and comfortable translucent tube enables easy sharing of this kit between shifts.The 3-wire surveillance kits feature one wire for receiving communication, one wire for the microphone, and one wire for the PTT. Motorola's state-of-the-art IMPRES technology allows communication between the radio and the audio accessory. The result is optimal audio performance, enhanced audio gain capability, and increased customization, assuring the highest quality communication.