The Infinity transmitter is dual band and operates on any GSM 1800, or 1900MHz communications network .
Ingenious design, completely disguised as a listening device. Simply dial the provided SIM card and listen to conversations and surrounding sounds with exceptional quality. Unlimited listening distance – call from anywhere in the world.
Do not mix this up with some of the cheaper models available on auction sites this is a quality UK manufactured device offering the best in GSM audio monitoring.