GSM bady & elder guard

* Frequency: 900\1800\1900
* Embed microphone, powerful sound receiving effect (Can receive sounds even 10 meters far away from the device)
* 24 hours non-stop power supply.
* All GSM SIM card compatible
* Stand-by time: 15 days

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. Embed condense, sensitive microphone, which could pick up any ambient sound.
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. It is a covert surveillance tool made for everybody.

Put a SIM card in the device. Once you call this number, it is working like a phone with auto answer without speaker.