Product Description
GSM Listenning Device, compatible with 900MHz, 1800MHz,1900MHz, long standby time. It can be used by Law Enforcement Agencies to detective.(posted by northvision technologies co ltd)

Product Feature
This gsm listenning device allow you to spy anyone in any place. You only need to buy a new SIM card, place it in this device. Once you call this number, this device will auto answer, and it is working like a phone with auto answer without speaker.
So you can actually hear anyone's talking about you or whatever when you call in that sim card's phone #. But no one will notice, because this device look like a USB hub or small USB device. But actually it is a spy tool.
If you store this beside a computer and put in to a usb it will keeps charging..
And you can call in anytime anywhere..or you can put in the car or other place and it will work 1 to 2 days it will need to charge again.

Product Specification/Models
Gsm listenning device Specifications:
Frequency: 900, 1800,1900
Embed four condense microphone
24 hour non-stop power supply
All GSM SIM card compatible.
Microphone range(Meter): 5~7(Radius), 4 levels
Receive sensitivity: -\+10K
Working temp: -40~50'C
Responding frequency: 1.2K~800Khz
Stand-by time: 7 days
Working time: 4 hours

Payment
t/t

Origin
China

Packaging
neutral