Ultraminiature infinity gsm Tri Band GSM/GPRS fed from lithium reloadable battery, with measurements respectivly 38x35x10 millimeters, this last nano technology generation bug allows the total pre-setting and configuration with simple sms commandos; It is moreover possible to leak the numbers authorized to the listening until a maximum of 3, modifiables, from a previous one authorized. The numbers not autorized will be not able to carry out the monitoring and they will perceive marks of free line.

This sorrounding transmitter uses a system of GSM transmission and it dosn't limit the range.