This SIM device is a special system designed for audio surveillance or monitor by providing regular mobile phone SIM services.

It has a magnetized core which helps itself easily fixed on any hidden metal surface.

A unique design, small frame and sturdy construction encompass the rich SIM technology beneath it's compact shell.

When the need comes, or unforgettable moment occurs, just dial up the SIM number, it runs silently at any circumstance, and help you capture needed sound of its surrounding.

Its internal battery could provide 2~3 hours working time, with external extra battery, it is capable of constantly running up to 6~7 hours.

* Frequency: 850\900\1800\1900

* Embed microphone can receive sounds even 10 meters far away

* 24 hours non-stop power supply.

* All GSM SIM card compatible

* Stand-by time: 15 days