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STronic Vario PRO K Plus GSM Bug with Knowles Microphone
249,00  EUR  ex VAT
311,25  EUR  inc VAT
Delivery in 15 days
14 day refund
24 month warranty

STronic Vario PRO K+ from the Longlife Vario series offers premium sound quality due to the integrated Knowles Microphone. It lasts up to 180 days in standby mode depending on the selected battery.

This listening device is reliable, easily installed, and used. It has the VOX call-back function, which is also the only command of this GSM Bug. It is small, compact, and easy to hide.
The Vario PRO K+ does not come with a battery, however, it can be connected to an external battery, like the STronic BA-5500 mAh, or to an external 220V/12V power source. 
The device itself can be used as a charger for the external battery when connected to the charger cable and adapter head that comes with the accessories. However, it can also be used with an external charger if you wish to. 
The miniature high-quality Knowles microphone is a long cable and as such, it can be hidden in a number of places. 
Find all StealthTronic products at this link.

Main Features:

  • Knowles Microphone for extra clear sound
  • VOX call-back function
  • Up to 180 days standby depending on battery 

STronic Vario PRO K+ Full Specifications:

1,7 cm x 4 cm 


Package contains:

  • Vario PRO K +
  • Charging adaptor
  • Charging cable
  • 3M mounting system


How to use the STronic Vario PRO K+:

  1. Connect the module to a battery of your choice or to 220V/12V external power source. 
  2. Put a SIM card into the device (not included). 
  3. Unplug the device and let it boot up for 10 seconds, and you will be able to call the device and listen to the conversation. 
  4. Activate the call-back function by sending an SMS = 1111
  5. Deactivate the call-back function by sending an SMS = 0000
  6. Charging - PLUG in the device with the SIM CARD inside and wait for it to charge. The device is charging when the red diode is on. The device takes several hours to charge, depending on your battery capacity (battery not included).

Battery info:

The device operates on an external battery (not included).
The device comes without a battery and is compatible with different battery sizes; from 800 mAh to 12800 mAh.
We have the STronic BA-5500 mAh available in stock. It can also be connected to an external 220V/12V power source.
The charger that comes in the accessories of the device is not a power source. It is for charging purposes only. 


The quality of the mobile signal in the place of installation will affect the quality of interception. 
It is recommended by the manufacturer to format the battery before first use, see details in the PDF below.
Please carefully study the PDF below before using and setting up the device.
SIM Card not included.
From 2020, the 2G network is no longer accessible in the USA, and these devices work on 2G. If you are from the US, you can use the 3G unit.
24 Months Warranty.

>>Download detailed specifications (PDF)<<


Disclaimer: Items on the website are not be used for the purpose of illegal surveillance of unsuspecting subjects. The items are to be used only in compliance with all the local laws and regulations under the threat of penalty.

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