It might look like a standard mobile phone, but beneath the fascia lies a high quality, covertly activated microphone. Following deployment in a 'friendly' environment, it has the appearance of a switched off mobile phone.It is activated by dialling in from any telephone. It will automatically answer the call without visual or audible indication, allowing the area to be audio monitored.
Employing a microphone vastly superior to the standard unit, the transmission can be effectively monitored or recorded for up to five hours using the standard battery or indefinitely if connected to a standard phone charger.