GSM 2way Audio Monitor Detection Portable GPS Tracker

describe:
This two way GSM audio device will call you when it detects a nearby sound. How awesome is this? Just insert a GSM SIM card and program it to your desired phone number for callback, and now you're in business! Trying to find out the truth behind what's being said? Now you can from a distance. You can even place several of these audio devices and set them up wherever you want, such as a bedroom, living room, conference room or office. Just insert the SIM card into the audio device and your bug will be activated and ready for action!

This two-way audio device has two amazing features:
(1) Dial the audio device and you can immediately listen to the conversation! The built-in microphone has a working radius of up to 7 meters, so you can set this hole anywhere!(2) Allow audio devices to call you when they hear people talking! This feature makes it more advanced than other GSM audio bugs on the market today.

Specification:Colour: BlackDimensions: 4.3x 3.2 x 1.4 (cm)Main function: Tri-band GSM two-way audio deviceMaterial: Molded PlasticColour: BlackGSM frequency compatibility: Tri-band (850MHz, 900MHz, 1800MHz, 1900MHz)Microphone range: 5-7 meters radiusPower: Built-in 200 mAh rechargeable Li-ion batteryTurn on the voice control function, the estimated continuous working time is 3-5 daysLocation-only functionality is expected to last 12-15 days