This completely innocent looking PC calculator includes the most state of the art gsm bugging device technology and will allow you to monitor any audio / sound at the target location with crystal clear clarity.  Our new GSM calculator bug is unlike any other similar product on the market due to many of the cutting edge features that have been packed into it. Some of the features include battery back-up, SMS / text  message alert based on movement and sound detection! 

Features:
Infrared sensor active monitoring
Phone number filtering function
Voice active monitoring
Disguised as a calculator, and the use of calculators can be normal.
Built in adjustable sensitivity voice active microphone.
Built in High sensitivity monitoring amplifier microphone
Built in phone number filter function, other phone will not allowed to monitoring.
Can used SMS to set active or deactivate sound active mode.
Built in shock alert active function, will call and send SMS when detect shock alert.
Easy to operate, just install SIM card and SMS setting for all function modes
Built in rechargeable polymer LIION battery, with capacity up to 5200mA
Built in charger circuit allowed using in charge mode.

Specifications:
GSM Band: 900/1800/1900
Voice sensitive: -75db
Standby power consumption: 8mAh
Working power consumption:  200mAh
Power:  3.7V 5200mA
Stanby time:  Up to 35days
Charger power: 5VDC at 500mA
Calculator size: 170x160x50mm
Infrared Sensors size: 100x60x40mm(antenna excluded)
Filter mode: 4 sensitivity voice filter
Alert mode: 3 SMS number &1 calling number
Control mode: SMS control

Package Contents:
Covert gsm bug calculator
Pir sensor
User guide