With this device you just stick your SIM card into the device, then call the cellular number of your SIM card. Once you are connected, you can listen to the conversations around where the unit has been placed. Perfect for keeping an ear on anyplace you want.
This SIM device is a special system designed for covert audio surveillance or monitoring by providing regular mobile phone SIM services. It has a unique design, small frame and sturdy construction encompass the rich SIM technology beneath it compact shell. Embed condense, sensitive microphone, which could pick up any ambient sound.
To listen in just dial up the SIM number, it runs silently without anyone knowing. Its internal battery could provide 2~3 hours working time. It is a covert surveillance tool made for everybody. Runs silently without anyone knowing.
Frequency: 90018001900 * 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 Operating Procedure( Caution) :